How to Use Wood-Working Tools IU^ > MM IIIIIIM»IW»«W>IM miWUWUUU I«I M I »tU l lli l Mi lWII < l<< W ll j l lWi< > »uu«n wi i >i Luu i >tw. < (Ufr,i Mii wiiw-, w«> ) » ui i i » i^m'. it« n t » l .iii >»»»ji » D.C.HbATH&Co. UN Glass «• — v — Book ; WOOD-WORKING TOOLS; HOW TO USE THEM. \S <\ cA MANUAL. in 2011 with funding from The Library of Congress s When a man teaches his son no trade, it is as if he taught him highway robbery.' 1 '' — Talmud. BOSTON, U.S.A., D. C. HEATH & CO., PUBLISHERS. 1.896. http://www.archive.org/details/woodworkingtools01indu ^ ^ > COPYRIGHTED BY HENRY S. GREW, Treasurer. 18&1. 1* it M IW8 Pkess of Rockwell and Chukchi 39 Arch St., Boston. ;-?*y/ INTRODUCTION. THIS book aims to give, in fourteen chapters, directions and exercises for the use of the Wood-working Tools. Like other text-books of its kind, it will best accomplish its purpose in the hands of an intelligent and practical teacher, who may use it for his own guidance in conducting a class. At the same time, it is so simply written and so amply illus- trated, that any bright boy will find the book alone a great help in his endeavors to learn the right way of using common tools. The book has been prepared for the Industrial School Association of Boston. That Society, having conducted successful industrial schools during the winters of 1876-7 and 1877-8, at 23 Church- Street, concluded to offer its apparatus and the results of -its experiments to the city, in Ihe hope that such schools would be maintained at the public expense. Meantime, the Society appointed a com- mittee to embody the valuable experience gained in its schools, in a Manual of Instruction. This Manual, with the accompanying account of its prep- aration, is their report. The Society hopes that the public will share its satis- faction in the work of its committee. The lessons are few in number, and simple in character. They aim only to give an elementary training in the manipulations common to all wood-working trades. But it is not chiefly in the interest of these or of any other trades that this course is offered to the public. Lessons like these, given at the same time IV INTRODUCTION. with the studies now pursued in our grammar schools, would relieve the weariness of purely mental exercises, and give a new zest to their pursuit. A single ward-room, like the one used by the school in Church Street, in any city, for the six months from December to May, during which time it usuallj lies idle, with very little expense beyond the original plant and a moderate salary to the teacher, would meet all the needs of three or four of the largest grammar schools for boys. Three such supplementary schools, if used in turn, would amply satisfy all the rightful claims of industrial education of this kind upon the school system of such a city as Boston. At so small an outlay of attention and money might the native aptitude of American youth for manual skill be turned into useful channels. In so simple a way might the needed check be given to that exclusive tendency towards clerical rather than industrial pursuits which the present school course undoubtedly promotes. GEORGE LEONARD CHANEY, President of the Industrial School Association. Applicants for further information may address Miss S. C. Paine, Secretary, Brimmer Street, Boston ; and Rev. Geo. L. Chaney, 7 Tremont Place, Boston, Mass. REPORT THE committee charged with the duty of preparing for the association a Manual of Wood-working Tools beg to present their final Report. This committee at first attempted to prepare a course of lessons which, though sufficiently simple to meet the needs of such schools as the association desired to encourage, should cover the whole ground to be gone over, in de- tail, the association authorizing the employment of such clerical and other assistance as might be necessary. In its present form, the work, though somewhat less ex- tensive than was at first proposed, is believed to be suffi- ciently full for the youngest pupils who are competent to understand the principles involved, and have strength enough to perform the work. At the same time pains has been taken, while systematizing the whole scheme, to leave the teacher free to adopt such alternative exercises as may promise best to develop the active intelligence of the stu- dent. To this end, while a number of the exercises, suffi- cient thoroughly to exemplify the method employed, have been worked out in detail, many of the lessons have been given only in outline, so far as the text is concerned, though with full illustration, and in some merely the subjects are indicated. A series of lessons was prepared in the winter of 1877-78 by Mr. Charming Whitaker and Mr. Raymond D. Chapell. They had the advantage of the valuable advice and sugges- tions of Mr. Alonzo W. Folsom, who critically examined the VI REPORT. work in its various stages of preparation. Each brought a special experience to bear upon the undertaking. Holt- zapffel's well-known treatise * proved itself to be an inval- uable aid. ' The first draft of these lessons was printed or papyro- graphed, and used by Mr. Chapell during the winter of 1877-78, while he was acting as teacher both in the school maintained by the association in Church Street, and in the School of Mechanic Arts of the Massachusetts Institute of Technology. Many valuable results of the experience de- rived from their use were embodied in a revised copy. A broadside containing the first lesson was printed for general distribution as an illustration of the work which the associa- tion had undertaken, and attracted much attention. It was afterwards printed in " The Polytechnic Review," of Phila- delphia, and in the Report of the Massachusetts State Board of Education for 1876-77. During that winter a collateral experience was gained in other similar schools of which Mr. Whitaker had the direction. The lessons also were placed in the hands of Mr, C. H. Dow, who taught a school of this kind in Gloucester, Mass., in 1878-79, from whom valuable suggestions were afterward received. During the fall and winter of 1878, Mr. George H. Chap- man, a graduate of the Institute of Technology, devoted him- self with zeal and efficiency to the writing out of new lessons based upon the instructions which he received of Mr. George Smith, Instructor in the School of Mechanic Arts. He re- peated in his own workshop the exercises of the school, and * The preparation of a series of lessons, suited to the use of amateurs and others, was undertaken by Mr. Charles Holtzapffel, of London, as early as 1835, but he finally abandoned the scheme after years of labor, on account of difficulties of classification and arrangement. He used the material that he had accumulated as the basis of his admirable scientific treatise upon " Turning and Mechanical Manipulation," one-half of which was published in 1850. REPORT. VII wrote out day by day a statement of the exact line of pro- cedure which it was found necessary to adopt in order to perform them most satisfactorily. He had shown himself to be peculiarly fitted for making such investigations as these, and although in frail health his interest did not abate with his strength, but he continued his labors almost up to the mo- ment of his untimely death, which occurred in January, 1879. During the same season, Mr. R. L. Bridgman took an active part in the work, and aided in making a digest and revision of much of the manuscript and printed matter that had thus far been brought together. It now became evident that so explicit and complete a work as was at first contemplated would occupy too much time in preparation, and, when done, might be too large and too costly to meet the ends that the association had chiefly in view. It was therefore decided to put into form for the press such a portion of the manuscript as would form a text- book sufficiently full for the guidance of classes, but not entering so thoroughly into matters of detail as was at first intended. The text in its present form is the result of that decision. The illustrations in which the figure of the workman oc- curs have been prepared by Mr. D. T. Kendrick. They are intended to make plain to the pupils all of those minute de- tails of position which the pupils need to understand without at the same time burdening their attention with extremely- detailed instructions in print. It was found to be necessary to pose the model for the artist in order that he might under- stand clearly what he was to represent, and it was only by the intervention of photography that it became practicable to secure the advantages to be derived from adopting this course. Mr. Frank Rowell, a member of the committee, and the superintendent of the different schools that have been con- ducted by the society, allowed his photographic gallery to Vlll REPORT. be used for this purpose, and both Mr. Whitaker and Mr. Folsom gave their personal attention to the accurate posing of the model in the most illustrative position for his work, and to placing the camera in the best position from which to view the model. The engravings which accompany the text were obtained from Mr. Kendrick's drawings, the outlines of which were traced from the photographs. The other en- gravings are reproductions of perspective drawings by Mr. A. J. Boyden, architect, a graduate of the Institute, who in this and in other ways rendered valuable assistance. Mr. Henry W. Burton and Mr. Albert Snow furnished suggestions that are embodied in the work. Messrs. A. J. Wilkinson & Co allowed themselves to be frequently troubled with ques- tions concerning wood-working tools, and gave free access to their large collection for the purpose of forwarding the work of the association. The illustrations, arranged in proper order, with a manu- script text, were now placed in the hands of Mr. J. Phillips White, who taught several classes in Cambridge during the winter of 1879-80. Mr. White took great interest in the work, and throughout a considerable portion of the term made weekly reports to the committee of the practical workings of the scheme, and wrote out notes of each lesson day by day. His experience seems to show that an intelli- gent class, in the hands of a competent instructor, can go through this manual in twenty-five or thirty lessons, of two hours each. Fully to explain the fundamental principles of the science of wood-working, and to embody all the valuable results of the experience which has been gained, would make a large volume, an undertaking that the association has virtually be- gun, but which, as has been said, their committee have had neither the leisure nor the means to prosecute. Although the present volume is thus but a fragment of the whole, it is REPORT. IX nevertheless believed to be sufficiently complete for the objects they have immediately in view, and to be adapted to the needs of classes of young persons who, with the tools in their hands, shall study under the leadership of intelligent and discreet persons, who are at the same time skilful teach- ers and expert workmen. The suggestion that the society should prepare a manual to aid in promoting the efficiency of the instruction given, and that the plan of the manual should be substantially that which has been partially carried out in this text, originated with Mr. Whitaker, who, subject to the approval of the committee, directed and supervised the work of those em- ployed by the society. Throughout the undertaking he has had the benefit of the aid and advice of the other members of the committee. Many meetings, both of the committee and of the society, have been held, at which questions that relate to the text-book have been discussed. Members of the society have in these meetings made suggestions which have been of service to the committee in the prosecution of the work. Finally, the text in its present form has been critically read and approved by Mr. Folsom. For the committee, WILLIAM R. WARE, Chairman* CONTENTS. ♦ Page. CHAPTER I. Striking 7 II. Splitting .*...... 14 III. Cutting ........ 22 IV. Planing . 27 V. Sharpening ....... 33 VI. Adjusting the Plane-iron . . . =39 VII. Marking and Lining . . „ . .44 VIII. Scoring and Paring 58 IX. Sawing 63 X. Reducing Warped to Plane Surfaces . . 69 XL Producing Plane Surfaces that are Square WITH EACH OTHER 72 XII. Boring .75 XIII. Joinery ........ 77 XIV. Finishing ........ 102 Fig. I, a. POSITION BEFORE BEGINNING TO SWING THE TOOL. Wood-Working Tools. - How to Use Them. CHAPTER I. STRIKING. THERE is a large class of striking tools. It includes the hammer, the mallet, the beetle, the hatchet, the axe, the adze, and all other tools which act by blows. Three movements are practised in striking with the lighter tools. They are the wrist, the elbow, and the shoulder movements. In each of the first three exercises, strike a number of blows with the proper tool upon a soft-wood board, or block, or upon a pad ; repeating the exercise until the nature of each movement is well understood, and fixed in the memory. The wrist movement is suited to the use of tack- hammers, and other light tools with which taps are struck. Exercise I, i. — The wrist movement. Grasp the handle of a light tool as far from its head as is convenient, with the thumb extended along the handle, and the fingers closed upon it. Let the face of the tool rest upon the object to be struck, as in Fig. I, a. Strike light taps, moving the hand and the tool as if they were one stiff piece, swinging about the wrist-joint as about a fixed centre. (See Fig. I, b.) Vary the height to which the head of the tool is lifted by varying the extent of the motion at the wrist-joint, and ob- serve that such variation will affect the force of the blow. 8 WOOD -WORKING TOOLS. HOW TO USE THEM. Do not at any time during the movement relax the grasp of the hand, nor permit any motion of the forearm. If, at first, it be too difficult to prevent the forearm from moving, sup- port it near the elbow. It may rest for support against the body, or upon a block on the bench. Fig. I, b. THE WRIST MOVEMENT. The elbow movement is suited to the use of tools of light and medium weight, with which blows of medium in- tensity are struck. Ex. I, 2. — The elbow movement. Hold the tool, and move the wrist, as in the wrist movement. In addition, move the forearm freely about the elbow-joint. (See Fig. I, c.) STRIKING. 9 Do not permit any movement of the arm above the elbow. Vary the extent of the movement at both the wrist and the elbow-joints, thus modifying the force of the blows. If, at first, it be difficult to prevent a movement of the arm above the elbow, support the arm against the body. Fig.I,,. THE ELBOW MOVEMENT. The shoulder movement is suited to the use of the heavier tools with which somewhat heavy blows are struck by one hand. Ex. I, 3. — The shoulder movement. Hold the tool, and move the wrist and the elbow, as in the elbow movement. In addition, move the arm freely about the shoulder-joint IO WOOD -WORKING TOOLS. HOW TO USE THEM. (See Fig. I, d.) Do not permit any movement of the body, except the slight movement at the ankle-joints, that pre- vents the body from being thrown out of balance by the motion of the hammer. Fig. I, a. THE SHOULDER MOVEMENT. The striking tools may be classed in two principal subdivisions. Those of the first subdivision do not act directly upon the wood ; but they strike a second tool or instrument which does act upon it. The hammer, the mallet, and the beetle are examples. Those of the second subdivision do act directly upon the wood. The hatchet, the axe, and the adze are examples. They are not simply striking tools ; they STRIKING. I I may be splitting, cutting, or piercing tools as well. We are concerned with them, in this chapter, only as striking tools. It generally requires more skill to swing with sufficient pre- cision the tools of the second subdivision than those of the first. Ex. I, 4. — To strike with precision. Mark a number of points upon the wider flat surfaces, or side-faces, as they may be called, of a piece of pine board, and strike them with as great precision as possible. Before beginning to swing the tool, place it upon the body to be struck, in the exact posi- tion that it should have when the blow occurs. (See Fig. I, a.) Notice the positions of the head and handle of the tool, and of the hand, arm, and body of the person. Endeavor & O & & © & €5 m> & & g o e> © & © o <^> & © G> O O Fig. I, e. THE EFFECTS OF SQUARE BLOWS. to bring the tool and all parts of the body into exactly the same positions, at the instant when the blow occurs, as they had when the tool was placed in position. A skilful person can tell, by the feeling in the different parts of his body, whether they have all come back pretty nearly to their orig- inal positions or not. He can also control the tool while it is swinging, so that all shall thus come back pretty nearly to their original positions. Strike a number of blows by each of the three movements named before ; and decide with which it is most easy, and with which it is most difficult, to strike with precision. Ex. I, 5. — To strike square blows. Lay a piece of pine 12 WOOD-WORKING TOOLS. HOW TO USE THEM. board upon a firm support. Sink the face of the hammer many times into the surface of the wood. Try to have the centres of the dents about an inch apart, and on lines parallel to the long edges of the wood, as shown in Fig. I, e. Both of the side-faces of the board may be covered with dents in Fig. I,/ WITHDRAWING A NAIL, — FIRST STAGE. this way. Be very particular to strike square blows. The dent made by a square blow will have the same outline as the face of the hammer, and all points of its outline will be sunken equally deep. STRIKING. *3 Ex. I, 6. — To drive tacks. Ex. I, 7. — To drive small nails. Ex. I, 8. — To drive large nails. Ex. I, 9. — To withdraw nails. Fig- l,g. WITHDRAWING A NAIL, — SECOND STAGE. Ex. I, 10. — To drive nails horizontally and at the left hand. Ex. I, 11. — To drive nails horizontally and at the right hand. Ex. I, Ex. I, 13. 12. — Toe-nailing. Blind-nailim CHAPTER II. SPLITTING. Caution. — Take care not to split toward yourself. Exercise II, i. — The end of the grain ; the yearly growth ; the lines of growth ; the pith-rays ; the age of the wood. Take a very thin and thoroughly- fay piece of oak, cut squarely off from the end of a stick of cord- wood, and showing the central pith-tube. Examine its flat sur- faces. They exhibit what is called the end of the grain. (See Fig. II, a.) Observe the curves which surround the pith-tube, at different distances from it. The dis- tance between any two of these curves indicates the thickness of the layer of new wood, which grows each year between the older wood and the bark. This new wood may be called the yearly growth. The lines which separate the growths of succeeding years may be called the lines of growth. Observe that rays shoot out from the centre in all directions. These rays are formed of a pithy sub- stance, and may be called pith-rays. Count the layers of yearly growth, and thus learn how long it took for the wood to grow. Fig. II, A. LINES OF EASIEST SEPARATION ON THE END OF THE GRAIN. SPLITTING. 1 5 Ex. II, 2. — Lines of easiest separation on the end of the grain. Hold the disk in the palm of the left hand, and crush it with the right thumb. Observe that it generally breaks along the rays, or along the lines of growth, or along zigzag lines, which follow sometimes the rays and sometimes the lines. (See Fig. II, a.) Ex. II, 3. — Lines of easiest separation along the grain. Tear into strips a piece of very thin wood, such as a veneer. Notice that the rent follows the grain. Examine the end of the grain. It will be found that, generally, the wood has split along the pith-rays, or along the lines of growth. Ex. II, 4. — Wood breaks more easily along than across the grain. Break several of the fragments both lengthwise and crosswise of the grain, and observe how much more easily they break lengthwise than crosswise. Ex. II, 5. — The edge of the grain. Take a somewhat wide, thin, pine stick, which has its wider surfaces parallel, or nearly parallel, to the pith-rays, and, therefore, nearly square with the lines of growth. Examine these wider surfaces. They show what is called the edge of the grain. The edge of the grain has a brilliant, glistening appearance, when newly split, and is sometimes called "the mirror surface." Ex. II, 6. — Cutting with the edge ; splitting with the wedge ; splitting along the grain. Force the sharp blade of a knife into the middle of the end of the stick used in the last exercise. (See Fig. II, b.) Observe that at first the wood separates exactly at the sharp edge of the blade, and that it is the edge that separates the wood. When a sharp edge sepa- rates a substance, the action is called cutting. Notice that before the edge goes far into the wood, the wood tears asunder in advance of it, and the edge ceases to act. The wedge becomes now the part of the tool which separates the wood. When a wedge separates a substance, the action is called splitting. Notice that the parts of the wood that are on either i6 WOOD-WORKING TOOLS. HOW TO USE THEM, side of the blade are about equally stiff. They beiid about equally to make room for the blade, and the stick splits along the grain. Ex. II, 7. — Splitting along the grain. Wood splits more easily along a line of growth than at a small angle with such a line. Split the pieces of the stick used in the last exercise, through the middle, as before, into four, eight, or more pieces. Observe that the wood splits, generally, along the grain. Notice the lines of growth on the ends. They are Fig. II, b. THE EDGE OF THE GRAIN. SPLITTING ALONG THE GRAIN. nearly or quite square with the wider surfaces of the stick. Start some of the splits more or less inclined to the lines of growth. Notice that such splits will of themselves twist about until they become nearly or quite parallel to the lines of growth. Notice that the split surfaces are mo7-e beautiful when parallel to these lines than when slightly inclined to them. Ex. II, 8. — The side of the grain. Take a thin, some- what wide, pine stick, which has its wider surfaces parallel, SPLITTING. 17 or very nearly parallel, to the lines of growth. Examine these wider surfaces. They show what is called the side of the grain. When newly split, the side of the grain has an appearance somewhat like that of satin, as was seen when examining some of the narrow split surfaces produced in Ex. II, 7. Ex. II, 9. — Splitting partly across the grain. Force the blade into the end of the stick used in Ex. II, 8, but very near to one edge, as shown in Fig. II, c. Notice that the Fig. II, c. THE SIDE OF THE GRAIN. SPLITTING PARTLY ACROSS THE GRAIN. part of the stick which is between the blade and the nearer edge is very limber, while the other part is very stiff. It is almost entirely by the bending of the limber part that room is made for the blade to enter the stick. The inner edge of the limber part is so much stretched by this bending that it breaks across the grain, and the split gradually tears through toward the nearer edge. Ex. II, 10. — Splitting 'partly across the grain. Wood splits more easily along the pith-rays than at a small angle 1 8 WOOD- WORKING TOOLS. — HOW TO USE THEM. with those rays. Split into fragments the pieces of the stick used in Ex. II, 9. Observe that whenever a part split off is much more limber than the part from which it was separated, the split generally tears through toward the nearer edge. Notice the lines of growth on the ends. The pith-rays are square with the lines of growth ; but they are not so strongly marked, as those lines, in pine wood. Start some of the splits a little out of square with the lines of growth. They will then start somewhat inclined to the pith-rays. Notice that such splits will of themselves twist about until they become nearly or quite square with the lines of growth, and parallel to the pith-rays. Observe that, when the split surfaces are parallel to the pith-rays, they have the glistening, mirror-like appearance which has been noticed before. Ex. II, 11. — Splitting parallel to the grain and to the lines of growth. Take a small pine stick, square at its ends, with its length parallel to the grain, and with the lines of growth, at one end, stretching parallel to two sides of the stick. Split it with a sharp knife, parallel to the lines of growth, into two nearly equal pieces. Notice how easily it splits. Ex. II, 12. — Splitting parallel to the grain and to the pith-rays. Take a stick like that used in Ex. II, n. Split it square with the lines of growth into two nearly equal pieces. Notice that about the same force is required as when splitting parallel to those lines. Ex. II, 13. — Splitting parallel to the grain, and across the lines of growth and the pith-rays. Take a small pine stick, square at its ends, with its length parallel to the grain, and with the lines of growth stretching from corner to corner at one end. Split it along a line that is parallel to one side of the stick. This line will be about equally inclined to the lines of growth and the pith-rays. " Notice that considerably more fo7-ce is required to split diagonally across the lines and SPLITTING. 19 rays than to split parallel to either. Observe that, as the split advances, its surface loses its plane, smooth character, and becomes furrowed or corrugated, as shown in Fig. II, d. Examine the surface and the end of the split. Notice that parts of the split surfaces are twisted. Near the cut, they are parallel to it. At the other end of the stick, they are more nearly parallel to the lines of growth, or to the pith-rays. Ex. II, 14. — Splitting fire-wood ; the easy way. Split a small stick of round fire-wood with a sharp hand-axe that Fig. II, d. MORE DIFFICULT TO SPLIT. Fig. II, e. THE HARD WAY. THE EASY WAY. has a good wedge to split with. Extend the first split entirely across one end, th?-ough the centre and along the rays, as shown in Fig. II, e. Divide one-half of the stick into quar- ters and eighths, along the rays. Divide each eighth into two parts along the lines of growth. The wood splits with comparative ease at any of these sections. Ex. II, 15.— Splitting fire-wood ; the hard way. Divide the other half of the stick used in the last exercise into two parts, along a surface parallel to the first split, and at a dis- 20 WOOD- WORKING TOOLS. — HOW TO USE THEM. tance from it equal to about two-thirds or three-fourths of the distance from the pith to the bark. It will be found com- paratively difficult to split the wood at this section. Knots. — Knots split most easily at the surface that con- tains the central pith-tube of the knot and the main pith-tube of the stick. In splitting large logs of wood, two feet or more in diame- ter, it is common to proceed as follows : The wood-cutter stands upon the top of the log, and sinks the edge of the axe into its end as many times as is necessary to make a cut along one of the pith-rays and extending from the pith-tube to the bark. He then drives one or more large iron wedges into the cut, by means of a heavy wooden mallet called a beetle. (See Fig. 11,/.) The head of the beetle is usually made of elm, or of some other wood which splits with diffi- culty ; and both ends of the head are hooped with iron, as a further safeguard against its splitting. Having driven in the wedge or wedges, he extends the cut along the grain, by SPLITTING. 21 sinking his axe through the bark into the sapwood, thus indi- cating the direction which the split should follow. He now pursues one or the other of two methods, according as the log splits with difficulty or with ease. First method. — If it splits with difficulty, he rolls the log entirely over, and repeats that which he has already done upon the other side. That is, he extends the cut entirely across the diameter of the log by the aid of his axe. With the beetle he drives other wedges into the split, and with the axe he extends the cut lengthwise of the log. He proceeds thus, splitting or cutting as his judgment dictates, until the log is divided from end to end. Second method. — If the log splits easily, the method pur- sued only differs from that which has just been described in this ; that he does not roll the log over, but performs all of his work upon one side. CHAPTER III. CUTTING. Cautions. — Never cut with a dull tool. Never cut TOWARD YOURSELF. When a sharp edge separates a substance, the action is called cutting. The knife, the shave, the chisel, the hatchet, the axe, are cutting tools. When a wood-cutting tool is very sharp, its edge divides the wood in its path, with- out either tearing the fibres apart or crushing them. If the edge is dull, it may make its way through the wood, partly by cutting and partly by tearing or crushing, but it will never make alright, clean cut when dull. The blade of a cutting- tool is wedge-shaped, and grows thicker from the edge towards the back. As- it penetrates, it forces the particles that are divided by the edge farther and farther apart. Cutting without splitting. If the chip or shaving re- moved is very thin, it bends easily out of the way of the tool, and does not check its progress. The shaving is cut, not split, from the stick. The shaving bends so easily that even the fibres of the shaving are not split apart. Ex. Ill, i. — Cutting lengthwise without splitting. With a very sharp pocket-knife, cut lengthwise of the grain a very thin shaving from a piece of soft wood. It will bend out of the way, as in Fig. Ill, a. Ex. Ill, 2. — Cutting crosswise without splitting. Cut crosswise of the grain a very thin shaving from the piece of soft wood. It will bend out of the way, as in Fig. Ill, b. In both exercises, III, i and III, 2, the shaving bends so easily out of the way, that the wedge has, practically, no work CUTTING. 2j5 to do. The cutting-edge removes the shaving without aid from the wedge. Fig. Ill, a. CUTTING LENGTHWISE OF THE GRAIN WITHOUT SPLITTING. If a chip or shaving is so thick that it does not bend out of the way, when being removed, the wedge of the tool squeezes the particles of wood that it touches, into the adjoining wood, and by thus compressing it, makes room for Fig. Ill, b. CUTTING CROSSWISE OF THE GRAIN WITHOUT SPLITTING. itself as it cuts deeper and deeper. When the wood is much compressed, great force is required to compress it, and it would be difficult to cut a thick stick in two, in this way. 2 4 WOOD-WORKING TOOLS. HOW TO USE THEM. Ex. Ill, 3. — Cutting with compression. Lay the stick used in Ex. Ill, 1, upon its side, and force the blade as far as you can into the stick, square across the grain, at a short distance from the end. (See Fig. Ill, c.) Notice that when the blade has been withdrawn, the wood cannot recover its original shape, and a gap is left in it. This is a true cut, because the cutting-edge divides the wood, but it is cutting combined with compression. The cut is as easily made in this exercise as in Ex. Ill, 2. It is the force required to compress the wood, by means of the wedge, that makes it so difficult to divide the stick. Fig. Ill, c. CUTTING WITH COMPRESSION. If wood could be compressed as easily as fruit can, the stick would be as easily divided. If it could recover its shape as easily, it would be as little injured. Ex. Ill, 4. — Cutting with compression. Drive a sharp mortising chisel far into a thick piece of pine with a mallet. Cut square across the grain. Notice that great force is re- quired to compress the wood, and that the wood cannot recover its shape, after the blade has been withdrawn. Ex. Ill, 5. — To lessen the work of cutting with compres- sion, by causing a thick chip to split. Cut a thin piece of pine, diagonally across the grain, near one end. Begin at about half an inch or an inch from the end, and force the knife CUTTING. 25 through, making a cut that is square with the wider flat sur- faces of the wood, as in Fig. Ill, d. The chip will make room for the blade, by splitting along the pith-rays, or the lines of growth, for it requires less force to split the chip in this way, than to compress the wood. Fig. Ill, d. THE CHIP SPLITS TO MAKE ROOM FOR THE BLADE. Ex. Ill, 6. To lessen the woi'k,of cutting with co?npres- sion, by taking advantage of the flexibility of the wood. Cut a thin piece of pine, diagonally across the grain, near one end, as in Ex. Ill, 5, except that the cut should be inclined about 45 to the flat surfaces of the wood, as is shown in Fig. Ill, e. The chip is so flexible that very little pressure is needed to bend it out of the way of the blade. The very sharpest cutting-edge is notched. — If the sharpest cutting-edge should be examined through a pow- 26 WOOD-WORKING TOOLS. HOW TO USE THEM. erful microscope, it would be found to be notched all along its length. It is thus like a saw with exceedingly minute teeth, and acts to the best advantage, if it is made to slide in the direction of its length, while it is being forced through the wood. Fig. Ill, e. THE CHIP BENDS TO MAKE ROOM FOR THE BLADE. Ex. Ill, 7. — To test the advantage of sliding the edgt while cutting. Repeat Ex. Ill, 1, without sliding the edge while cutting ; then repeat it again, sliding the edge in the direction of its length. Notice how much more easily the cut is made, and, also, how much more brilliant the cut sur- face is, in the latter case. Repeat twice, each of the exer- cises III, 2-6, in a similar manner and for a similar purpose, CHAPTER IV. PLANING. Cautions. — Brush all grit and dirt from the surface BEFORE BEGINNING TO PLANE, AND THUS AVOID DULLING THE IRON. When pushing the plane, keep its sole PARALLEL WITH THE SURFACE TO BE FORMED. Exercise IV, i. — To remove the saw-marks from a rough, flat board with a jack-plane. — Stand with the right side of the body at the bench, at the rear end of the board, with the left foot advanced in a bracing attitude, and so that the body may move freely, lengthwise of the bench. Grasp the handle of the plane firmly in the right hand, with the forefinger ex- tended to touch the plane-iron. (See Fig. IV, a.) To begin the stroke, grasp the stock of the plane, in front of the plane -iron, firmly with the left hand, the left thumb pressing on the left side of the stock, and with the four fingers on the opposite side, nearly at right angles with the sole of the plane. Place the sole of the plane on the left- hand edge of the board, with the plane-iron behind the rear end of the board. Push steadily with the right hand, and press down with the left hand, so as to keep the toe of the plane flat upon the surface of the board. This will prevent the plane from tilting endwise, the shaving from being too thick at the start, and the board from being too thin at the rear end. If the shaving is too thick at the start, the plane may jump and leave a bunch on the board. When the stroke has extended as far as is convenient, let the left arm drop easily to the side, and continue the stroke with the right hand. (See Fig. IV, b.) 28 WOOD-WORKING TOOLS. — HOW TO USE THEM. Fig. IV, a. THE TOE IS PRESSED DOWN WITH THE LEFT HAND. PLANING. 29 Jmiii'l'l'. gmUHj JiilillllllllUULIIIHIIIII mini mill Illllllllll lilliu n7, 'JT J ;: ... ,7 ,.., 1 tr t^» Fig. IV, 6. THE LEFT HAND DROPS TO THE SIDE, WHILE THE STROKE' IS C*ON- TINUED WITH THE RIGHT. THE HEEL IS KEPT DOWN WITH THE RIGHT HAND. 3° WOOD-WORKING TOOLS. — HOW TO USE THEM. While returning the plane to the rear end of the board, tip it upon the left-hand edge of the sole, in order to avoid dull- ing the iron. (See Fig. IV, c.) When planing near either edge of the board (see Fig. IV, d), keep the sole of the plane flat upon the board. This will prevent the plane from tipping sidewise, the shaving from being too thick and the board from being too thin, at the edges. Fig. IV, c. THE PLANE IS TIPPED, TO AVOID DULLING IT. When planing near the forward end of the board, press down with the right hand, so as to keep the heel of the plane flat upon the surface of the board until the plane-iron has passed entirely off from it. (See Fig. IV, b.) This will pre- vent the shaving from being too thick and the board from being too thin at the forward end. If the board is longer than a convenient stroke, take each succeeding stroke a little to the right of the last until the right-hand edge has been PLANING. 3* reached, then advance the length of the stroke, and proceed as before. Occasionally brush away the shavings, so that the plane may rest flat upon the board. Fig. IV, d. THE SOLE IS KEPT FLAT ON THE BOARD, WHEN PLANING NEAR THE EDGE. Ex. IV, 2. — To test the flatness of a newly -planed sur- face. Place either edge of the sole upon the surface, and look toward the light between the edge and the surface. (See Fig. IV, e.) Repeat the test at different places along the board. Sight lengthwise of the board. Sight diagonally across the board. 3 2 WOOD-WORKING TOOLS. HOW TO USE THEM. Fig. IV, e. TESTING THE FLATNESS OF THE BOARD. CHAPTER V. SHARPENING. Jack-knives, and some hatchets, are ground upon both sides. Paring chisels and plane-irons are ground upon one side only. Ex. V, i. — To sharpen a jack-knife upon an oil-stone. Ex. V, 2. — To sharpen a paring-chisel upon an oil-stone. Ex. V, 3. — To sharpen a hatchet upon an oil-stone. Ex. V, 4. — To withdraw the plane -iron from its position in the stock. Hold the plane in the left hand, with the thumb in its throat, as shown in Fig. V, a. Press against the chip, with the thumb, to prevent the iron and the chip from falling, when they have been loosened. Loosen the iron and the chip, by striking a few light blows upon the toe, as shown in Fig. V, a. Withdraw the iron and the chip, with the right hand, and put the iron, the chip, and the stock, upon the bench. Ex. V, 5. — To sharpen the plane-iron upon an oil-stone. If the iron has a cap, remove it by the aid of a screw-driver. Then grasp the iron in the right hand, as shown in Fig. V, b, with the thumb on its edge, the first two fingers stretched upon its upper side, the last two fingers closed against the under side, and the end pressed against the palm of the hand. Steady the iron, while sharpening it, by pressing the first three fingers of the left hand upon the upper side, and the thumb against the under side, as shown in Fig. V, c. Rub the iron over the surface of the oil-stone, in such a manner that the wide, flat surfaces of the iron will remain constantly at an angle of 35 with the upper surface of the oil-stone. (See ^^£eauofEdu c g *"> V V T V 34 WOOD-WORKING TOOLS. — HOW TO USE THEM. Fig. V, a. WITHDRAWING THE IRON. SHARPENING. 35 Fig. V, b. THE RIGHT-HAND GRASP. THE CORRECTLY SHARPENED IRON, AT A. THE INCORRECTLY SHARPENED IRON. AT B. 36 WOOD- WORKING TOOLS. — HOW TO USE THEM. Fig. V, c. SHARPENING THE IRON, SHARPENING. 37 Fig. V, d. REPLACING THE IRON, 3 8 WOOD-WORKING TOOLS. — HOW TO USE THEM. A, Fig. V, b.) Take care not to permit a variation, in the inclination of the iron to the oil-stone, while rubbing, for, if the inclination varies, an objectionable rounded edge will be produced. (See B, Fig. V, b.) If a burr or "wire-edge" forms, turn the iron over and rub it upon the surface of the stone while the -iron liesy&z/ upon it. Ex. V, 6. — ■ To replace the iron. Hold the stock in the left hand, with the thumb in its throat, with the fingers under its sole, and with the tip of the second finger in its mouth. Replace the iron and the chip, press gently upon the chip with the thumb, and insert the iron so far that its cutting- edge may be felt by the tip of the second finger. Take care not to cut the finger. Drive the chip in sufficiently far to hold the iron. (See Fig. V, d.) CHAPTER VI. ADJUSTING THE PLANE-IRON. The principal adjustment of the plane-iron is for the pur- pose of determining or changing the thickness of the shaving which it can cut. Exercise VI, i. — To determine the thickness of the shav- ing. Having replaced the iron, as in Ex. V, 6, sight length- wise of the sole, to see if the cutting-edge is in the desired position. If it does not project enough, strike a. light blow, with the hammer, on the opposite end of the iron, as is shown in Fig. VI, a. If the right-hand portion of the cutting-edge projects, beyond the sole, more than the left-hand portion does, correct the inequality by driving the opposite end of the iron from right to left, as is shown in Fig. VI, b. If the left-hand portion of the cutting edge projects too much, drive the opposite end of the iron from left to right, as is shown in Fig. VI, c. Notice, that in order to drive the end of the iron from left to right, easily, the heel of the plane should be thrown well toward the right side. If the entire cutting-edge pro- jects too much from the sole, strike one or two light taps on the top of the toe, as is shown in Fig. V, a, and afterwards tighten the chip, as in Fig. V, d. Finally, sight endwise of the sole, as in Fig. VI, a, to see if the iron is accurately adjusted. Ex. VI, 2. — To test the adjustment of the plane-iron. Try the plane upon a board or plank, to see if it will remove shavings of the desired thickness. 40 WOOD-WORKING TOOLS. — HOW TO USE THEM. Fig. VI, a, MAKING THE IRON PROJECT FURTHER. ADJUSTING THE PLANE-IRON, 41 Fig. VI, 6. MAKING THE LEFT-HAND PORTION OF THE EDGE PROJECT, £2 WOOD-WORKING TOOLS. — HOW TO USE THEM. Fig. VI, c. MAKING THE RIGHT-HAND PORTION OF THE EDGE PROJECT. ADJUSTING THE PLANE- IRON. 43 Ex. VI, 3. — To vary the adjustment so as to produce shavings which differ in thickness. Repeat Exercises V, 4, V, 6, and VI, 1-2, several times in succession, in the order named, withdrawing, replacing, and adjusting the iron to produce shavings which differ in thickness. Finally, test the different adjustments by making shavings and examining them. CHAPTER VII. MARKING AND LINING. Exercise VII, i. — To mark off distances. Rest the graduated edge of the rule, upon the board, parallel to the tried edge, as shown in Fig. VII, a. Rest the elbow upon the board, elevate the wrist, hold the rule firmly between the thumb and the middle finger, to prevent it from tipping, and rest the other fingers upon the top of the rule, to keep it steady, as shown. Mark points upon the board, with a pen- cil, scriber, knife, or other marking tool, where the lines on the rule touch the board. To make a chalk-mark connecting two points of a surface, the " chalk-line " is used. It is a small, stout cord, upon which chalk has been rubbed. When stretched tightly between the points, and snapped by being raised and let go, it leaves a distinct chalk-mark upon the surface. Ex. VII, 2. — To chalk the chalk-line. Pass the awl through the loop in the end of the line, and thrust it into the wood at one of the points that the mark is to join. Draw the line tight with the left hand, holding it between the thumb and the forefinger, as shown in Fig. VII, b. Hold the chalk in the right hand, bend the cord at the chalk, keep the flat sur- face of the chalk parallel to the two straight parts of the bent cord ; let the cord just touch the inner surface of the thumb. Rub the chalk upon the cord, beginning near the awl. No- tice that, when the line and chalk are held as has been directed, the line will wear away the chalk without wasting it. Ex. VII, 3. — To join two given points of a horizontal board, by a straight chalk-mark. Pass the awl through the MARKING AND LINING. 45 Fig. VII, a. MARKING OFF DISTANCES. 46 WOOD- WORKING TOOLS. — HOW TO USE THEM. Fig. VII, b. CHALKING THE LINE, MARKING AND LINING. 47 loop in the line, and press it into the wood at one of the given points. Chalk the line. Then stretch it tightly, cov- ering the other given point with it. If convenient to do so, stand at the end of the board, with the right foot advanced toward it. With the left thumb press the line against the board near its end, and with the fingers of the left hand draw the line tight. (See Fig. VII, c.) Shut one eye and place the other directly over the line. Grasp the line, at a point which is about a foot distant from the left thumb, between the tips of the forefinger and thumb of the right hand. Rest the little finger of the right hand upon the board to steady the hand. (See Fig. VII, d.) Keep the surface of contact of the thumb and forefinger vertical and also parallel to the line. (See Fig. VII, e.) Raise the cord vertically with the right hand. Sight lengthwise of the line. If it appears straight when seen from a point di?'ectly over it, it will have been raised vertically. Let go the line. On removing it, a straight chalk-mark will be found, on the board, joining the given points. Second method. If it is more convenient to stand at the side of the board, use the left hand, and the eyes, as before. Grasp the line between the right forefinger and thumb, with the right palm down, and with the backs of the fingers to the front. Keep the surface of contact of the thicmb and forefinger vertical and parallel to both straight portions of the line. Snap the line, as before. Ex. VII, 4. — To join two given points of a horizontal board, by a crooked chalk-mark. Stretch the chalked line between the given points, as in Ex. VII, 3. Carry the line to the left, or to the right, of the vertical while raising it. If it appears, from a point directly over its original position, to be bent at the right thumb and finger, it has been carried to the right or left of the vertical. Let go the line. On remov- ing it, a crooked chalk-mark will be found upon the board. Ex. VII, 5. — To join two given points of a board by aid 48 WOOD-WORKING TOOLS. HOW TO USE THEM. Fig. VII, c. SNAPPING THE CHALK-LINE. POSITION OF THE BODY. MARKING AND LINING. 49 •2vT < \ Fig. VII, d. SNAPPING THE CHALK-LINE. POSITION OF THE HANDS, 50 WOOD-WORKING TOOLS. — HOW TO USE THEM, Fig. VII, e. THE SURFACE OF CONTACT OF THE THUMB AND FOREFINGER, AS SEEN FROM A POINT IN THE VERTICAL PLANE OF THE CHALK-LINE. MARKING AND LINING. 5 I of a straight or a curved ruler. The ruler should be placed upon the surface of the board, with its edge passing very near to both of the points, without covering them. The edge should be equally distant from both points. Prevent the ruler from slipping upon the surface of the board by weights, or by some other means. With the right hand place the marking-tool on one of the points, and incline it toward the edge until it rests against it. With the left hand, press the edge of the ruler, near the point where the marking-tool touches it, firmly down upon the surface of the board. Mark along the edge of the ruler without varying the inclination of the marking- tool, either to the surface of the board, or to the edge of the ruler. Vary the position of the left hand, as often as is neces- sary, to keep the surface of the ruler in contact with the board near the point where the marking-tool touches it. Take care that the marking-tool does not follow the grain of the wood, causing the inclination of the tool to vary, or causing the ruler to slip upon the surface of the board. The result will be a faithful copy of the shape of the edge of the ruler. Ex. VII, 6. — To mark, roughly, a line upon a board, parallel to an edge and at a given distance from it. Clasp the graduated rule firmly with the left hand. Rest the rule upon the board, with its length square with the edge, and with its end at the given distance from it. With the left thumb, press the rule upon the surface of the board ; rest the left forefinger against the edge of the board. (See Fig. VII, f) Place the second finger of the right hand upon the board, and against the end of the rule. Let the marking-tool touch the end of the rule, the second finger, and the surface of the board. (See Fig. VII, /.) Slide the marking-tool and rule along the surface. The line thus drawn will be nearly parallel to the edge, and nearly at the given distance from it. Ex. VII, 7. — To mark a straight line through a given point, at right angles to a tried edge, when the tried edge is 52 WOOD -WORKING TOOLS. HOW TO USE THEM. Fig. VII, /. DRAWING A LINE NEARLY PARALLEL TO THE EDGE. MARKING AND LINING. 53 Fig. VII, g. THE LEFT-HAND EDGE IS THE TRIED EDGE. 54 WOOD-WORKING TOOLS. — HOW TO USE THEM. Fig. VII, k. THE RIGHT-HAND EDGE IS THE TRIED EDGE. MARKING AND LINING. 55 the left-hand edge of the board. With the fingers of the left hand, press the beam of the try-square firmly against the tried edge. (See Fig. VII, g.) Let the edge of the blade pass very near to the given point without covering it. With the thumb, press the blade of the square firmly upon the surface of the board, changing the position of the thumb, if necessary, as the marking-tool moves along the edge. Place the marking- tool upon the given point, and against the edge of the blade. Mark across the board without changing the inclination of the tool, or permitting the blade to spring off from the surface. Second method. Place the marking-tool upon the given point, and the square upon the board, with the edge of its blade at a little distance from the tool. Slide the square toward the tool, until the edge of its blade touches the tool. While sliding the square, press its beam against the tried edge. If the tool is not pushed out of position by the blade, there is no objection to this method. Ex. VII, 8. — To mark a straight line, through a given point, at right angles to a tried edge, when the tried edge is the right-hand edge of the board. (See Fig. VII, h.) Proceed as in Ex. VII, 7, except that the beam of the square is to be pressed against the tried edge with the left thumb, and the blade is to be pressed against the surface with the fingers of the left hand. Ex. VII, 9. — To mark, accurately, upon a block, a line parallel to a tried edge, and at a given distance from it. Grasp the lower side of the block with the left hand. Grasp the gauge with the right hand, the first finger encircling the head, and the thumb pressed against the side of the bar as nearly opposite the spur as may be. (Fig. VII, i.) Press the head against the tried edge, the further lower corner of the bar resting upon the surface. (Fig. VII, /.) Beginning at the nearest point, push the gauge forward with the thumb, turning it just enough to make" a mark with the spur. The mark must not be too deep. 56 WOOD-WORKING TOOLS. — HOW TO USE THEM. Fig. VII, i. THE THUMB IS OPPOSITE THE SPUR. MARKING AND LINING. 57 Fig. VIII, / THE FURTHER LOWER CORNER OF THE BAR RESTS UPON THE SURFACE. CHAPTER VIII. SCORING AND PARING. When a specified form is to be " roughed out " of a stick of wood, it is usual to make the largest chips that can be removed with safety, in order that the unnecessary work of cutting the wood into small chips may be avoided. This is so important an art, that, in well conducted wood- carving Fig. VIII, a. SCORING. Fig. VIII, b. PARING. establishments, only the most skilful workmen are permitted to rough out work. Large chips may be removed by scoring and paring. Exercise VII T, i. — To trim to a line, with a hatchet. Take a piece of pine board and mark a line upon it about SCORING AND PARING. 59 an inch from one edge. Remove the wood, between the mark and the edge, by scoring and paring. Score into the board, as shown in Fig. VIII, a, beginning at the end that rests upon the block ; then reverse the board, and pare off the chips, as shown in Fig. VIII, b. Do not attempt to finish the surface. The common hatchet is not a finishing tool. Ex. VIII, 2. — To make a chamfer, with a knife. Draw lines, on two of the sides of a pine stick, parallel to one of its long edges. Score into the stick, nearly to the lines, then reverse it, and pare or whittle off the chips, as shown in Fig. VIII, c. Fig. VIII, c MAKING A CHAMFER. Ex. VIII, 3. — To make chamfers, with a carver's chisel. Draw lines, upon one of the wide, flat surfaces of a block, parallel to its edges. Draw similar lines upon each of the four adjoining surfaces. Cut, first, the chamfers that cross the grain (see Figs. VIII, d, VIII, e, and VIII, /), then the others. Finish the chamfers, as you cut away the chips. The carver's chisel is a finishing tool. Ex. VIII, 4. — To cut to a semi-circular line, with a par- ing chisel. Describe, with the dividers, a semi-circle near one end of a pine stick. (See Fig. VIII, g.) Pare to the 6o WOOD- WORKING TOOLS. HOW TO USE THEM mn:i: ' :, ., . •'•' I!,i ^i ii . i Fig. VIII, d. CHAMFERED BLOCK. Fig. VIII, e. CUTTING A CHAMFER ACROSS THE GRAIN. SCORING AND PARING. 61 Fig. VIII,/ IF THE CHISEL CUTS TOWARD THE BLOCK, WHEN IT CUTS THE EDGE, THE EDGE WILL NOT BE SPLINTERED. 62 WOOD-WORKING TOOLS. HOW TO USE THEM. line, as shown. The first cut should be made a short dis- tance outside of the line, and near one end of the semi- circle. The chips will then, easily, split out of the way of the chisel. After reaching the middle of the semi- circle, begin again at the other end. Finally, finish with light chips, cutting close to the semi-circle. Fig. VIII, £ PARING. CHAPTER IX. SAWING. Caution. — Take care not to remove any part of the GUIDING LINE WITH THE SAW. Exercise IX, i . — Cross-cut sawing. Take a piece of clear pine board, on which lines are drawn square with the tried edge. With the left hand, grasp the tried edge in such a place as will bring the thumb-nail, when extended, even with the line farthest to the right, at the same time pressing down on the board, with the palm of the hand, to hold it firmly in place on the horses. (See Fig. IX, a.) Grasp the saw with the right hand, with the forefinger extended along the side of the handle, to assist in steadying the saw, and with the other fingers passed through the opening made for that purpose. That hand will then take, nearly, the position that it has when one is pointing with the forefinger. Place the middle of the cutting-edge of the saw, at the line, on the tried edge of the board, the blade resting gently against the left thumb-nail. The left-hand points of the teeth, should fust graze, but not cut into, the line. Hold the blade of the saw, square with the surface of the board. Without bearing on the saw, draw it several inches toward the shoulder in a straight line. This will start the kerf, and will prevent the saw from moving sidewise, and the edge from being torn and splintered. With very slight pressure, reverse the motion just completed, and move the saw its full length, back and forth, continually, guiding it by the line drawn. To guide the saw correctly, watch closely its path, from a position vertically above the line. If the saw leaves the line, twist the blade, 6 4 WOOD- WORKING TOOLS. — HOW TO USE THEM. while it is moving, in the kerf. The back edge of the saw is somewhat thinner than the cutting- edge. Then the blade can thus be twisted, and the true line returned to. .Do not press upon the saw, for if it is pressed upon, it will be more liable to depart from the line, and it will cut less smoothly. The saw may be injured by pressing too hard upon it. To ascertain if the blade is square with the surface of the Fig. IX, a. STARTING THE KERF. SAWING. 65 board, grasp the beam of the try-square, with the left hand, with its inside edge next to the palm. Place the outside edge of the beam upon the work, and the outside edge of the tongue against the side of the saw. When the kerf is Fig. IX, b. PREVENTING THE PIECE FROM FALLING, AND THE EDGE FROM SPLINTERING. 66 WOOD-WORKING TOOLS. — HOW TO USE THEM. square with the surface, the saw will touch the edge of the square its full length. When the kerf is not square with the surface, bend the blade of the saw toward the desired position, while it is moving in the kerf and until the fault is corrected. When the saw is well advanced through the work, place the left knee against the nearest edge of the board, to prevent it from moving. Grasp the board, with the thumb and finger of the left hand, on both sides of the kerf, to sup- port the piece that is being sawn off. While in this position, the sawing may be completed, without permitting the piece to fall upon the floor. Near the end of the cut, take short, light, quick strokes, to prevent splintering the edge. (Fig. IX, b.) Ex. IX, 2 . — Rip-sawing. Take a clear pine board, with lines drawn upon it lengthwise. Place it upon the horses, nearly as shown in Fig. IX, c, but let its right-hand edge so far over-hang the horses, that the saw can pass the ends of the horses freely. The end of the board need not over-hang the side of the first horse, as shown. With the right hand, grasp the saw, as in Ex. IX, i. Press the right knee upon the board, to hold it in position. With the left hand, grasp the end of the board, and, at first, with the left thumb-nail, guide the blade steadily. Saw close to the line but do not remove any of it. Should the parts, on each side of the blade, draw together and bind it in the kerf, insert a wedge, in the kerf, in front of the saw. A scratch-awl or a screw- driver is usually at hand and can be used for this purpose. (See Fig. IX, d.) Generally, when rip-sawing from the butt of a tree towards the top, the parts spread ; and when rip-sawing in the opposite direction, from the top towards the butt, the parts come together and bind the saw. The board may be so narrow, that it cannot be held firmly, if its right-hand edge over-hangs the ends of the horses. In that case, place it upon the horses, as shown in Fig. IX, c. SAWING. 6? Fig. IX, c. MOVING THE BOARD TO AVOID CUTTING THE HORSE. 68 WOOD-WORKING TOOLS. KOW TO USE THEM. Saw along a line, almost to the first horse. Move the board forward and, again, cut toward the horse. After the kerf has been made long enough, move the board backward, rest its end on the horse, and place the saw, in the kerf, behind the horse. (See Fig. IX, d.) Fig. IX, d. SPREADING THE KERF. CHAPTER X. REDUCING WARPED TO PLANED SURFACES. Exercise X, i . — To warp a board. Wet one side and dry the other. Ex. X, 2. — To produce a plane from a warped surface, using saw, chisel } block-plane, and jack-plane. Lay a warped board, of even thickness, on the bench, with the hollow side up, and observe that it will rock on the bench. Put wedges underneath, to prevent it from rocking. So adjust the wedges, that the highest corners of the board will be equally distant from the bench. Draw a line, on each end of the board, parallel to the top of the bench, and touching the lowest part of the upper edge. About three-fourths of an inch from each end, make a cut with a cross-cut saw, from the top of the board downward. Let it end in a line, parallel with the surface of the bench, but not quite so near to that surface as the line drawn across the end. Remove, with a chisel and block-plane, all of the wood lying between each saw-cut and the nearest end, thus producing a surface nearly or quite parallel to the bench, and containing the line drawn upon the end, as shown in Fig. X, b. Take two straight-edged sticks of equal width, about twenty or thirty inches long, having one thin or feather edge. These sticks are called "winders." Place one of them in each notch, with the thin edge uppermost. Sight across them, as in Fig. X, c. If the thin edges are found to be in line, the surfaces upon which the winders rest are in the same plane ; if the thin edges are not in line, one or both of those sur- faces must be cut away, until they do come into the same 70 WOOD- WORKING TOOLS. — HOW TO USE THEM. plane. Join the edges of the surfaces thus formed, by- straight lines drawn on each of the long sides of the board. Remove all of the wood that lies above the plane surface containing these lines. The result is the desired plane sur- Fig. X, a. UPPER SURFACE WARPED. Fig. X, b. SURFACES AT ENDS PARALLEL TO BENCH. face. The saw, the chisel, and the plane, may all be used in removing the superfluous wood. Test the surface, occasion- ally, with a straight-edge, placed crosswise of the board. REDUCING WARPED TO PLANED SURFACES. 7 1 tab CHAPTER XI. PRODUCING PLANE SURFACES THAT ARE SQUARE WITH EACH OTHER. Exercise XI, i . — Make a number of blocks from clear pine boards. The edges are to be square with, or parallel with, one another. The side-faces are to be smooth-planed, the edge-faces are to be jointed, and the ends are to be block-planed. Ex. XI, i. — Make a number of blocks from clear pine plank. The edges are to be square with, or parallel with, one another. The sides are to be jointed, and the ends are to be block-planed. PRODUCING PLANE SURFACES. 73 Fig. XI, a. THE USE OF THE BACK-SAW AND THE BENCH-HOOK, 74 WOOD-WORKING TOOLS. HOW TO USE THEM. Fig. XI, b. THE USE OF THE BACK-SAW AND THE BENCH-HOOK. CHAPTER XII. BORING. Exercise XII, i . — To bore, across the grain, partly through a block. Bore a number of holes in a pine block, in regular succession. (See Fig. XII, a.) Let the centres of the holes be in the same line and so near to one another that thi wood will break out between the holes. Bore to within about /Ml>C5>€5>inD€Ii^ 7 Fig. XII, a. BORING, ACROSS THE GRAIN, PARTLY THROUGH. a quarter Of an inch of the under side of the block. Make several lines of holes in this way. Let the centre lines of the holes be square with the upper surface. Ex. XII, 2. — To bore, across the grain, entirely through a block. (See Fig. XII, b.) Bore holes, as in Ex. XII, i, but let the point of the bit go entirely through. Then turn the block over, and bore from the other side. 76 WOOD-WORKING TOOLS. HOW TO USE THEM. ^