Fig. 677.
To use it, the board to be jointed is laid flat on the raised part of the shooting-board, where it is firmly held with the left hand, with the end of the board pressing against the stop of the shooting-board, and the edge to be jointed lapping over the edge of the raised part. The planing is done with the plane lying on its side on the lower part of the shooting-board (Fig. 677). The cutting-edge of the plane thus being at right angles with the surface of the board, the edge will be planed squarely across. The shooting-board should be fastened on the bench in some way, to prevent it from slipping around.
Attachments to keep the sole of the plane at right angles to the surface of the piece can be had at any hardware store, and serve the same purpose as a shooting-board for thick stock, but not equally well for thin pieces.
You can reverse the sides of two pieces to be jointed for gluing, as described on page 406, giving a joint like that shown in Fig. 678 (which is exaggerated). The iron of the plane is sometimes purposely set to project unevenly beyond the sole.
Fig. 678.
If you have many joints to make, you can have the edges jointed at slight expense at any wood-working mill on a planer made for the purpose. See Jointing.
Smoothing-Plane.—See Plane.
Smoothing Surfaces.—See Plane, Scraper, Sandpaper.
Splices.—See Joints and Splices.
Spline.—A flexible strip, used as a ruler, for drawing curves. See Marking.
Splitting-Saw.—See Saw.
Splitting Wood.—We have seen how a log in drying cracks along the radial lines (page 31), thus showing the natural lines of cleavage or separation in the direction of the medullary rays, that is, radiating from the centre. From this we see that the wood will, of course, split most easily and smoothly on the radial lines. Like all wood-choppers you can often make practical use of this fact in splitting wood with a knife or chisel, or in splitting fuel with an axe. The next easiest way to split wood is as nearly as may be on the line of the annual rings, or tangential to the line of the medullary rays, in the same direction as when the layers separate in forming "cup shakes" (see Appendix). This way is sometimes easier than to rive a stout log through the centre.
Spokeshave.—The spoke-shave is very useful for smoothing small curved and irregular surfaces. Metal spoke-shaves of various patterns can be bought with various adjustments for different curves, etc. Also a "universal" spoke-shave can be had, with movable handles and detachable bottoms which can be adapted for curved or straight work, and a width gauge by means of which it can be used for rabbeting.
The spoke-shave is a very useful tool and works upon the same general principle as the plane, but lacking the long flat sole of the plane is used only for irregular surfaces, which its short and sometimes curved face enables it to smooth with great ease. It also acts on the same principle as a draw-knife with the addition of a guiding stock. It bears somewhat the same relation to the draw-knife that the plane does to the chisel.
Fig. 679.
Grasp the tool firmly, bearing downward with both hands and pressing forward with the thumbs, pushing the tool from you so as to cut like a plane (Fig. 679). Of course it can also be drawn towards you when the circumstances of the work render it advisable. See Paring and Sharpening.
Spoon-Bit.—See Bits.
Square.—This tool is one of the most useful in the list, for the importance of having your work "square" can hardly be over-estimated.
The try-square should have a metal strip on the inside edge of the wooden arm, head, or beam, or the handle can be wholly of metal. Get a medium-sized try-square (9- or 10-inch blade is good) rather than a very small one, as it is much more useful; and a graduated scale, like a rule, on the blade is sometimes serviceable.
Fig. 680.
The primary use of this tool is to test or "try" the accuracy of right-angled work—hence the name. The one special point to bear in mind in using it for this purpose is to be sure that the head or beam is pressed firmly against the edge or side to which it is applied, determining the accuracy of the angle by the position of the blade (Fig. 680).
Fig. 681.
You will also use the try-square continually for marking straight lines across boards or timbers at right angles to one side or one edge (Fig. 681). In using it for this purpose be sure not merely to press the head of the square firmly against the edge of the board, but to keep it securely in the same position. When the blade is placed correctly on the given point do the marking as by any straight-edge. Another way is to place the point of the pencil or knife directly on the given point and slide the square along until it bears on the pencil or knife. Then, keeping the head of the square firmly against the edge, the line can be drawn along the blade.
Fig. 682.
The try-square sometimes is made with the end of the head or beam next the blade cut on a bevel. By placing this bevel against the edge a try-square of this construction can also be used as a mitre-square (Fig. 682).
If you buy a second-hand square, or if a square has been wrenched, you can test its accuracy by marking a line with it across a surface from a straight edge, then turning the square over and repeating the operation; the two lines should coincide. But the edge from which you rule must be perfectly straight, or the test will be of no value. If, however, you buy new squares made by the best makers they will be as accurate as any test you can apply to them.
Beginners, particularly young beginners, are very apt to be so engrossed in making the line along the blade that they forget to keep the head in position, or let it slip, when the blade will of course cease to be at right angles with the edge or side (Fig. 683).
Fig. 683.
The framing-square, "steel-square," or large two-foot carpenter's square, is a very useful and important tool; not merely for framing and large, heavy work but also for small work, and it is of great value in many mechanical operations. Even an iron square is very useful, but a nickel-plated steel-square is the best, as the figures are more distinct and it is less likely to rust. The long arm makes a good straight-edge. See also page 181.
Staining.—When you stain wood, do it for the sake of the colour, preserving the beauty of the grain, and not to try to imitate a more expensive wood. It is better, as a rule, to use good wood of a handsome colour and leave it as it is to mellow with age than to stain or colour it, but there are times when you will wish to stain wood.
The main point to bear in mind for successful staining is to colour the wood itself, not to put on a superficial coat of coloured varnish. For instance, the fumes of ammonia (or the liquid itself) will give oak in a very short time the same dark colour which the ammonia in the air will produce after years of exposure. This is a natural process—merely anticipating the change caused by time.
There are a number of ways of staining dependent upon such chemical processes carried on in the wood itself. These ways are the best, as you can readily see. Having got the right colour, the wood can be oiled, shellacked, varnished, or waxed in the usual way. By this method the natural grain of the wood is not obscured. In fact, the figure of the grain is sometimes made more conspicuous.
Another way is to wash the wood with some thin stain of the desired colour, after which you can finish in the usual way. This is a good method, for the wood itself is coloured to some distance below the surface, and after it is finished it will take considerable bruising to expose its original colour. This method also sometimes enhances the beauty of the grain.
The poorest way to stain, but a very common one with amateurs and in cheap work, is, instead of staining the wood itself, to cover the surface with coloured varnish or shellac. This is often the cheapest and quickest way of getting a desired colour, but it is decidedly the poorest way. Of course, no coating of colour put on outside can be as durable as colour imbedded in the substance of the wood itself, and scarring or injury to the coating exposes the original colour beneath. Besides this, the grain and character of the wood are necessarily obscured by a coloured coating. Wood finished in this way almost always has a cheap, artificial look, and you can usually detect the fraud at a glance. There are many cheap "varnish stains" or coloured varnishes, but you will do well to avoid them, unless for the cheapest and poorest work.
There are two things you will wish to do in staining. One is simply to darken or enrich the natural colour of the wood, so as to give it at once the rich, deep, mellow tone produced by age. This is always the best way to do when it will give the colour you want. But if you want to change the colour entirely—to make pine wood red or green, or cherry black, you must use some chemical process that will develop a new colour in the wood, or must apply a regular stain.
Raw linseed oil alone, well rubbed in and allowed to stand before applying shellac or varnish, will deepen and bring out the natural colouring in time as well as anything else, but it takes a good while. Repeated applications, each thoroughly rubbed in and the excess rubbed off, and after standing some days or weeks, given a light rubbing down with fine sandpaper, then another oiling, and so on, will in time give a surface of beautiful colour, as well as a soft and attractive lustre. But to carry out this process may take months, so that you will not be very likely to practise it; but you see the result sometimes on old wooden tool-handles and plane-stocks which have been so treated. If you do not care about deepening the colour greatly, one or two applications, allowed to stand a week or two before finishing, will often be sufficient and will make a great difference in the looks of your work, and take off that raw, fresh look peculiar to recently cut wood.
If your work is such that you can defer the shell acing for a year or so, as in the case of some pretty piece of furniture to remain in the house, there is no way you can develop the richness of the wood better than to oil it and let it stand to mellow, with occasional applications of oil and rubbing down. Then finally rub down with fine sandpaper and shellac in the usual way.
To hasten the process we must apply something stronger than oil. If the work is of oak, shut it up in a box or tight closet, with a dish of strong ammonia on the floor. Do not stay in the box or closet yourself, as it is dangerous. A simpler way is to wash the work with the ammonia, more than once if necessary. Have the room well ventilated when you do this, and do not inhale more of the fumes than necessary. Wetting the wood is sometimes a disadvantage, however, in glued-up work, and it "raises the grain," which must be rubbed down with fine sandpaper before finishing.
To deepen the colour of mahogany or cherry, simply wash it with lime-water (a simple solution of common lime in water) as many times as may be necessary, which is cheap and effective. After this process, thoroughly clean out all cracks and corners before sandpapering, for particles of the lime which may be deposited will spoil the appearance of the work when finished. This process preserves the natural appearance of the wood. The only drawback is the necessity of getting the work so wet. Some days should be allowed for the water to evaporate before shellacking. To get a darker shade, apply in the same way a solution of bichromate of potash in water.
Whitewood takes stains finely—much better than pine. Oak will stain almost any colour, but the individuality of the wood—the character of its grain and structure—is so strongly marked that it is poor taste to attempt to stain it to imitate other woods. If you stain it, stain it just as you would paint it, simply for the colour.
A good way for indoor work, such as a piece of furniture or anything of the sort you may wish to colour, is to mix dry pigments with japan and then thin the mixture with turpentine, or turpentine alone can be used. After the work is coloured in this way put on a couple of coats of varnish. For outside work you can use oil. This is a cheap way and wears well. It applies only to the cheaper woods which you do not care to leave of the natural colour. For black inside work you can use ivory-black, ground in japan and thinned with turpentine. Ivory-black or bone-black are superior to lampblack, but the latter will do very well for most purposes. Dragon's blood in alcohol is used to give a colour similar to mahogany. Alkanet root in raw linseed oil will give a warm and mellow hue to mahogany or cherry.
There is an almost endless number of recipes for staining, but such others as you need you can learn from some finisher or painter, for the limits of this book do not allow fuller treatment of so extensive a subject.
Steel-Square.—See Square.
Steel-Wool.—Long, fine steel shavings done up in bundles can be used instead of sandpaper for some purposes. There are various degrees of fineness. This is good for cleaning off paint and for smoothing curved surfaces, but should not be used until all work with the edge-tools is done, because of the particles of the metal. It can be used for "rubbing down" in finishing.
Straight-Bent Chisel.—See Chisel.
Straight-Edge.—There are no definite dimensions for a straight-edge. Any piece of wood that is straight and convenient to use can be so called; the size and the length depending on the work for which it is to be used, from a common ruler to a long board. The edge of a large carpenter's square is handy for short work. Clear white pine or straight-grained mahogany is good for straight-edges, but a straight-edge is not the easiest thing for a beginner to make, and you will do well to find something straight to use for a while until you acquire the skill to make one—or get the carpenter to make you one, which he will do for a very small sum or for nothing.
Fig. 684.
To test a straight-edge, mark a line by it, then turn the straight-edge over and see if it still coincides with the line, or mark another line and see if it coincides with the first one. Try your straight-edges by this test once in a while, as they are liable to become crooked. In turning the edge over, however, do not reverse the ends, as in case of an undulating curvature the curves may agree and give you the impression that the edge is straight when it is not. In the first case shown in Fig. 684 (exaggerated) this would not happen, but in the second case (also exaggerated) it might. See Marking.
Strop.—A piece of hard, smooth leather on which to strop your tools you can easily procure. It can be fastened on a piece of wood (see page 85). Spread on it a paste of sweet oil and emery, lard oil and crocus powder, or some similar preparation. A pine board on which "air-dust" has accumulated can even be used. See remarks under Sharpening.
Tacks.—Tacks are sold as one-ounce, two-ounce, and so on according to size.
Do not use tacks for fastening wood to wood, but only for fastening leather or cloth or the like to wood. The pointed wedge-shape of the tack tends to split thin wood, and is not at all suitable to fasten two pieces of wood together, particularly in thin wood or near the edge. Possibly you may have seen some disastrous results from the attempt to tack pieces of wood together.
Tape-Measure.—This article (preferably of steel) is often useful, though not nearly as important for an amateur to buy as many other things.
Tenon.—See Mortising.
Tenon-Saw.—See Saw (Back-Saw).
Tool-Racks.—See page 83.
Toothed-Plane.—See Plane.
Fig. 685.
Truing Surfaces.—To true a curved or warped surface, as of a board, lay it on the bench with the rounded side down and wedge it firmly underneath to make it as nearly level as possible. Then scribe a line with the compasses across each end of the board at the height of the lowest point of the surface (Fig. 685). Cut a depression or kind of rabbet at each end down to this line (Fig. 686). Next, by the use of winding-sticks placed on each of these rabbets you can easily see whether they are in line (see Winding-sticks). Alter the rabbets if necessary to get them in line. Draw lines on each edge connecting the bottoms of the rabbets, and plane away the superfluous wood down to these lines. When this is done the top of the board will be true or in the same plane. Test it by placing the straight-edges in different positions on the surface and sighting as before, correcting any errors. One side of the board being made true in this way, the other can be made parallel by gauging a line all around the edge, measuring by the thinnest point of the board, and planing off the superfluous wood in the same manner as the first side.
Fig. 686.
You can sometimes facilitate the process of planing off the superfluous wood by making cuts with the saw and removing part of it with the chisel, or by planing across the grain (the jack-plane is good for this purpose), or paring across the grain with the chisel, or any such method, always being careful not to cut quite as deep as the intended surface, so that all the marks and cuts can be removed by the final planing. See Plane, and also page 179.
Try-Square.—See Square.
Turning-Saw.—See Saw.
Turpentine.—See Finishing and Painting.
Twist-Drill.—The twist-drill is much better than the gimlet-bit. It makes a good hole, bores easily, is not easily dulled, can be used upon metal, and one kind in common use can be easily kept in order by simply sharpening the ends. There are various patterns. A little care is necessary, however, particularly in hard wood, as they are liable to be snapped by bending. See Bits.
Varnish.—See Finishing.
Veining-Tool.—See Carving-Tools.
Vise.—See page 65. For vise for metal-work, see page 70.
Warping, To Remove.—Of course the simplest way to straighten a warped board is to put a weight on it, but the difficulty here is that it usually will stay straight only while the weight is on it, unless you leave it longer than the patience of the average amateur lasts. To do this (or to warp a straight board either) with some chance of success, (1) heat one side, or (2) wet one side, or (3) wet one side and heat the other, or (4) wet both sides and expose one to the fire (Fig. 687). But do not be too sure that the result will be lasting. Sometimes it will and sometimes not. Another way is to thoroughly soak the board, press it into shape between clamps or under a weight, and leave it until dry; a week or more is none too long, and boiling water is better than cold. Simply laying a board down on a flat surface will often cause it to warp, because the two sides of the board will be unequally exposed to the action of the atmosphere. Planing off one side only, or planing one side more than the other, often produces the same effect. See pages 50-53 and Appendix.
Fig. 687.
Wedges.—Wedges are in constant use for lifting or separating heavy bodies, as doubtless you know, and the principle of the wedge comes in in using the axe, hatchet, chisel, knife, and the other edge-tools (see page 25). Besides this use of the wedge you will often find it valuable to tighten or clamp objects of various kinds, or to hold them firmly in place.
If you wish to split objects or tear them apart, use a single wedge, for the increasing thickness of the wedge applied at one point tears or splits the wood apart. But if you merely wish to squeeze, or press, or hold firmly, or move, without damaging the shape of the wood, use double wedges,—that is, two wedges having the same inclination or taper and pointing opposite ways. You will see that the sides of the double wedge (that is, the outsides of the wedges) will be parallel no matter how hard you drive the separate wedges, so that the pressure will be exerted without injuring or jamming the surfaces against which the wedge bears (see Fig. 333). Short, flaring wedges do the work more quickly, but require harder blows to drive, and are more liable to slip. Long, tapering wedges work more slowly, more easily, and are not liable to slip. You will also use wedging to secure tenons and dowels (see Mortising, etc.).
Whittling.—See Knife.
Winding-Sticks.—Two straight-edges, each of equal width throughout, can be laid on edge, one across each end of the surface to be tested. Stand back a little and look across the top edge of one to the top edge of the other, and if these edges agree you may know at once that there is no winding where you have placed the straight-edges (Fig. 688). By putting them in different positions you can finally determine whether the whole surface is true or not.
Fig. 688.
Fig. 689.
It is more accurate to use winding-sticks considerably longer than the width of the piece to be tested, as then any warping or winding will be exaggerated and more easily seen (Fig. 689). If the upper edges of the sticks are thin, or "feather-edged," it is easier to tell exactly when they are in line, but this does not ordinarily matter, except in work requiring extreme accuracy.
Fig. 690.
To find, for example, when the legs of a table, chair, or the like are cut so that the article will stand evenly, turn it over with the legs sticking up, put straight-edges on the ends of the legs, sight across these (Fig. 690), and trim one or two legs until the edges are in line. See Scribing for other methods.
Warping or winding of short pieces can be detected by simply laying one straight-edge diagonally from corner to corner (Fig. 691). This will show at once which parts require to be planed to make the surface true.
Fig. 691.
Withdrawing Nails.—When withdrawing nails place a block under the hammer-head as shown (Fig. 692), using more blocks, if necessary, as the nail is withdrawn.
To draw the nails from boxes, pry up a board, together with the nails, a short distance—perhaps ¼"—and then with a sharp, quick blow of the hammer pound the board back into place, not striking the nails but the board between them. This will usually leave the nail-heads projecting a little above the surface, so that you can draw them as shown in Fig. 692, and thus save splitting or defacing the boards and bending the nails, as usually results from smashing or wrenching boxes apart. The quick blow drives the board back before the motion has time to communicate itself to the nails, on somewhat the same principle that a bullet makes a round hole in a window pane without smashing the glass.
Fig. 692.
Wood-Filler.—See Finishing.
Wrench.—A strong wrench is often very serviceable in wood-working operations.
APPENDIX
Collection of Specimens of Wood.—Waste pieces of all the common woods can easily be obtained at the wood working shops. Have some system about the size and shape of the specimens. Some kinds you may be able to get only in pieces of such shape as you can find among the odds and ends of the shops, and many rare foreign and tropical woods you can obtain only in quite small pieces, but even these will show the character of the wood and add value to the collection. Waste scraps of veneers of rare woods can be glued on blocks of pine.
The specimens will be most valuable if you can get them out so as to show a longitudinal section along the medullary rays (or through the heart), a longitudinal section at right angles to the medullary rays (or tangential to the annual rings), and a cross section (Fig. 693). It will be an advantage also to show not only the heartwood but the sapwood and bark. If you cannot get such large pieces of even the common woods, a collection of small flat blocks will be well worth making.
Fig. 693.
The specimens will show to best advantage if polished (one half of each side can be polished) or finished with a dull lustre, and they will be good objects on which to practise finishing (see Finishing in Part V.).
All the information you can pick up about the strength, durability, toughness, elasticity, and uses of the various woods will be sure to come in play sooner or later. The gradations of hardness, density, weight, toughness, elasticity, etc., are almost endless.
Notice, therefore, the weight, colour, hardness, density, and characteristic odour of the specimens; the proportion of heart to sapwood, and the colour of each; the size and condition of the pith; the character of the grain, whether coarse or fine, close or open and porous; the number, arrangement, size, and colour of the medullary rays (when visible); the width and character of the annual rings (when visible), whether wide or narrow, with many or few ducts or resin canals. You will find many things to notice in some woods. Use a magnifying-glass if you can.
Notice also about the bark. Hunt up all the woody stems you can, compare the bark of the different specimens, noting its colour, taste, odour, surface, thickness, and the different ways it cracks and is cast off; and notice how easily you can learn to tell the common trees by the bark alone. Sections of small stems or branches will often show the character of the wood well.
Note what you can about the character and habits of the trees themselves; the height, diameter, age, and the shape and peculiarities of the leaves. In this connection, a collection of leaves will also be interesting to make. You can soon learn to tell the common trees by their leaves.
Notice how, in some trees, as the pines, spruces, firs, the stem grows right straight up to the top, forming a spire-shaped tree. This is called an excurrent trunk (Lat., excurrere, to run out). Notice how, in other trees, like the elm, oak, etc., the stem branches again and again until it is lost in the branches. This is called a deliquescent stem (Lat., deliquescere, to melt away).
Study the shape and arrangement of the different kinds of trees as shown in outline against the sky; best, perhaps, when the leaves are off. You can learn to tell the common trees by their outline. Do they look stout, firm, strong, and rugged, or delicate, yielding, and graceful? To a certain extent you can thus form an idea of the character of the wood, as in comparing the pine, with its comparatively light top and slender leaves, with the heavy growth which the trunk of the oak has to sustain in wind and snow.
Preservation of Forests.—Forests are of great value from their effect upon the climate, making it more equable. They tend to cause abundant and needed rainfall and to preserve the moisture when fallen, releasing it to the rivers gradually, and thus preventing abnormal freshets and extreme droughts. By absorbing and parting with heat slowly they cause the changes of temperature to be less sudden than in the open country. They temper the heat, and they serve as a protection, or "wind-break," to adjacent land. Trees, with other vegetation, are essential to the purification of the air. All this is in addition to the obvious uses of supplying fuel and wood for an almost endless variety of purposes, not to speak of the value of trees for shade and as features of the landscape.
The reckless rate at which the forests of the United States are being destroyed is becoming a serious matter, not merely because of depriving wood-workers of the materials with which to work, but because of the influence of the forests upon the climate, the soil, etc., upon which so much of the welfare of mankind depends. At the present rate of destruction many generations cannot pass before the supply of wood will be practically exhausted. It is every year becoming more difficult to obtain native lumber of the best quality and large size.
One of the most serious aspects of the matter, however, is in regard to the washing away of the soil, which owes not merely its origin but its preservation to the forest and other vegetable growths. Professor Shaler tells us that "it is in this action of the rain upon the bared surface of the ground that we find the principal danger which menaces man in his use of the earth."
The individual wood-worker may not have control of any forest or wood-lot, but he can at least use his influence indirectly, when opportunity offers, toward needed legislation to restrict, or at least regulate, the improvident waste now going on, and he can in many cases take advantage of Arbor Day to plant at least one tree toward preserving the balance required by nature.
Common Woods and Some of their Characteristics.—There are many things to be considered by the beginner when choosing his wood. Many of these points have been treated in Chapter III. (to which the reader is referred), but a few additional remarks about the various kinds may be of use.
One important thing, however, to be borne in mind before beginning, is to select straight-grained, plain, rather soft, and easily worked stock. With this and with sharp tools you will have every chance of success, while with hard, crooked-grained wood and with dull tools you will be well started on the road to discouragement and failure.
It may be remarked, incidentally, that beginning with soft woods, such as white pine, calls for even keener-edged tools than can be got along with for harder woods, like oak. This, however, though it may seem a disadvantage, is really a good thing, for it compels one to keep his tools sharp. You will soon find that it is impossible to do even passable work in the softer woods without sharp tools, while with harder wood you may succeed by brute force in mauling the work into tolerable shape without being sufficiently impressed by the fact that your tools are dull and require sharpening.
Besides the familiar fact that the heartwood is usually better than the sapwood,[51] it may be useful to remember that, as a rule, the wood from a young tree is tougher than that from an old one; the best, hardest, and strongest in the young tree usually being nearest the heart, while in an old tree the heart, having begun to deteriorate, is softer and not as good as the more recently formed growths nearer the sapwood. If the tree is in its prime the wood is more uniformly hard throughout. The sapwood, as a rule, is tougher than the heartwood, though usually inferior in other respects; and timber light in weight is sometimes tougher than heavy wood, though the latter is often stronger and more durable and preferable for some purposes. The application of these statements varies much according to the kind of wood and different circumstances, for the growth and structure of trees is a very complex matter, and the diversities almost infinite.
It may be well to bear in mind, considering the great variety of purposes for which the amateur uses wood, the distinction between the elasticity needed for such purposes as a bow or horizontal bar, and the toughness required for the ribs of a canoe, or the wattles of a basket. In the former case the material must not merely bend without breaking, but must spring back (or nearly so) to its former shape when released, as with lancewood or white ash; while in the latter case it must bend without breaking, but is not required to spring back to its original form when released, as with many green sticks which can be easily bent, but have not much resilience. These two qualities are found combined in endlessly varying degrees in all woods. Elastic wood must necessarily have toughness up to the breaking-point, but tough wood may have but little elasticity.
Earliest of all trees, historically, come the pines—the conifers—and then the broad-leaved trees. The conifers, or needle-leaved trees, include the pines, firs, spruces, cypresses, larches, and cedars. As a rule they contain turpentine, have a comparatively straight and regular fibre and simple structure, are usually light, flexible, and elastic, and the wood is more easily split or torn apart than that from the broad-leaved trees, and is easily worked. The wood of the broad-leaved trees is more complex in structure than that of the conifers and, as a rule, harder, and for many purposes stronger and more durable.
Besides the woods in general use there are many which have merely a local value where they grow, and a long list could be made of the woods which have but very limited uses, as well as of those which, from their scarcity, hardness, small size, or other peculiarities are practically out of the question for the beginner or the amateur, except on rare occasions.
The following list makes no claim to completeness, but may be of some use to the beginner.
Apple.—This wood is used for turning, such as handles, etc., and for other small work. It is handsome, fine-grained, and somewhat hard.
Ash.—This is a valuable wood, of which there are a number of varieties. It is used for agricultural implements, carriage-building, floors, interior finish, cabinet-work, etc. Ash is flexible, tough, and elastic. It is good to stand a quick and violent strain, as that put on a horizontal bar in the gymnasium, although in time it becomes brittle. White ash is the variety best suited for such purposes. It is good for oars and the like. Ash is of a rather coarse and usually straight-grained texture, and most varieties are not difficult to work.
Basswood.—The wood of the American linden, or basswood, is soft and light in substance, white or light brown in colour, is easily bent but not easily split, free from knots but prone to warp, and is used for cabinet-work, carriage-work, and for various minor articles. It can be obtained in boards of considerable width.
Beech.—This close-grained wood, hard, firm, strong, and taking a good polish, is extensively used for machine-frames, handles, plane-stocks, some kinds of furniture, and a variety of minor articles, but will not often be needed by the amateur. The medullary rays are noticeable.
Birch.—The birch, of which there are many species, is widely distributed in North America, and furnishes an important wood, which is used for a great variety of purposes,—for furniture, floors, interior finish, turning, and a long list of minor articles. It is close-grained, and most varieties are hard and strong, but not difficult to work, and are susceptible of being given a smooth satiny surface and a fine finish. The uses of the bark of the canoe birch are familiar to all. This tree is good not merely for canoes, but its wood is used for paddles, skis, and the like.
The black birch is especially esteemed for furniture and interior work. It is of a beautiful reddish- or yellowish-brown colour, and much of it is beautifully figured with wavy and curly grain. It is frequently stained in imitation of mahogany, a deception much assisted by the resemblance in grain, and not easily detected if skilfully done.
Black Walnut.—Large black-walnut trees are practically almost as thoroughly exterminated in America as the bisons of the Western prairies. The wood can be obtained, however, though it is not abundant in very wide boards. It is durable, usually straight-grained, moderately strong and hard, not difficult to work, holds glue well, and can be given a fine finish. It holds its shape well, and is an excellent wood for many purposes in interior finishing, cabinet-work, and for various minor articles. It has been very extensively used for gun-stocks. Its sombre colour is not always admired, but it is an excellent wood for amateur work. When mottled or in the form of burl it is, of course, harder to smooth. The English and Italian varieties of walnut have long been used.
Boxwood.—This wood is distinguished for its extremely compact and even grain. It is hard and heavy, is used in turning, wood-engraving, and the like, but is not likely to be required by the amateur.
Butternut.—This wood, found in North America, has a rather coarsely marked grain, is soft, light, of a yellowish-brown colour, and when finished makes a handsome wood for furniture and interior work.
It is easily worked, but is not the easiest material for the amateur to smooth satisfactorily, because of the peculiar texture of the wood, which tends to "rough up" unless the tools are very keen.
Buttonwood.—See Sycamore.
Cedar.—This tree, found quite abundantly in the United States, furnishes a wood which is exceedingly durable, particularly where exposed to the alternations of moisture and dryness, as when inserted in the ground or in situations near the ground, and is very valuable for fence-posts, foundation-posts for buildings, railroad ties, shingles, pails, and the like. Some varieties of cedar are used for building purposes and interior fittings.
The varieties of white cedar are light, of good grain and easy to work, soft, and not particularly strong, but durable and admirably adapted to such purposes as boat-building, for which it is largely used. Red cedar, which is in many respects similar to the other varieties, is distinguished by its colour and by its strong fragrance, which, being obnoxious to insects, makes it excellent for chests and closets. It is used for pencils.
Cherry.—This is a valuable wood for the amateur. It is found extensively in the United States. It is fine-grained, of moderate hardness, not difficult to work, and of a beautiful reddish-brown or yellowish-brown colour. It has a satin-like surface when smoothed, and can be given a beautiful finish. The black cherry is especially esteemed. It can be obtained, so far as it has not been exterminated, in quite wide boards. Cherry mellows and grows richer in colour with age. The varieties having a wavy texture are especially beautiful. It is much used for cabinet-work, interior finish, and for many purposes. The beginner should select only the softer and straight-grained varieties, as some of the harder and denser kinds are exceedingly hard to smooth.
Chestnut.—The value of this wood to the amateur lies chiefly in its durability. It lasts well in or near the ground or exposed to the weather. It can be used for framing, for posts for a fence or to support a building, and for similar purposes. It is soft, coarse-grained, not very strong, but is not difficult to work.
Cottonwood.—This is a soft, light, close-grained wood, used for woodenware, boxes, pulp, etc.
Cypress.—This wood is found in North America, Mexico, parts of Asia and Europe. It is a valuable material, yellowish or yellowish-brown in colour, very durable when exposed to the weather or in contact with the soil, light, soft, easily worked, and is used for general lumber purposes for which pine is used, but to which it is superior for withstanding exposure. It is used for interior finish, doors, clapboards, shingles, cabinet-work, boat-building, posts, and a great variety of purposes. It takes a fine finish. The cypress of the Southern United States is of large size, and the wood is of beautiful figure and colouring. Valuable varieties are found upon the Pacific coast.
Deal.—See Pine and Spruce.
Ebony.—The excessive hardness of ebony renders it unsuited for amateur work. It is also expensive. It is very hard and solid, with black heartwood and white sapwood, and is used for furniture, turning, and small articles.
Elm.—This useful wood, strong, tough, and durable, usually flexible, heavy and hard, is extensively used in some of its varieties for boat-building, the frames of agricultural implements, yokes, wheel-hubs, chairs, cooperage, and many other purposes. Some species are very good for continued exposure to wet. The rock elm is a valuable variety, esteemed for flexibility and toughness as well as durability and strength.
Fir.—See Pine and Spruce.
Hemlock.—This wood, valuable for its bark, is cheap, coarse-grained and subject to shakes, brittle and easily split, and somewhat soft, but not easy to work. It is unfit for nice work, but can be used for rough framing and rough boarding, for which its holding nails well renders it suitable.
Hickory.—This wood, found in the eastern parts of North America, is highly esteemed for its strength and great elasticity. It is hard, tough, heavy, and close-grained. It is largely used for carriage-work, agricultural implements, hoops, axe-helves, and the like. It is hard to work. The shagbark is especially valued for timber.
Holly.—This wood is quite hard, close-grained, and very white, though it does not retain the purity of its colour. It is used for small articles of cabinet-work and for turning.
Lancewood.—The use of this wood for bows, fishing-rods, and such purposes has been extensive. It is distinguished for its elasticity.
Lignum Vitæ.—The extreme hardness, solidity, and durability of lignum vitæ make it of great value for pulley-sheaves, balls for bowling, mallets, small handles, and turned objects. It is too excessively hard for the beginner to use.
Locust.—The wood of the locust of North America is hard, strong, heavy, exceedingly durable, and of yellowish or brownish colour. It is a valuable wood, and is used extensively for posts for fences and for the support of buildings, for ship-building, and for other work to be subjected to exposure or to contact with the ground. It is used in turning, but not extensively for interior work.
Mahogany.—This highly valuable wood, which did not come into general use until the eighteenth century, is found in the West Indies, Mexico, Central America, and some other regions. It is very durable. The colour is found in a great variety of shades from golden-brown to deep reddish-brown. Some varieties are light and quite soft, even spongy, while others (the best) are very hard and heavy, close-grained, and strong. In some kinds the grain is quite straight, in others curved and twisted into an endless variety of crooked shapes, the latter being the most beautiful for ornamental work, but more liable to change of shape than the straight-grained varieties.
The straight-grained varieties change their shape but little,—less than most woods,—and are therefore excellently suited for the framework or structural parts of cabinet-work, for pattern-making, and the like. The so-called baywood holds its shape well and is easily worked, but is not especially beautiful. The better grades of mahogany grow darker and richer in colour with age, but some varieties become bleached and lustreless with exposure.
It is of the greatest value for interior finishing, for furniture, and for cabinet-work generally, and is also used for many other purposes.
The term mahogany is used in commerce in a rather comprehensive way. Mahogany from San Domingo has long been highly esteemed, but is now difficult or impossible to obtain. The light-coloured variety known as white mahogany is much valued for its beauty.
Mahogany is excellent for holding glue. It can be obtained in wide pieces, thus often saving the necessity of gluing. It can be given a beautiful dull finish or a high polish, as may be desired.
The beginner should only attempt the plain, softer, straight-grained kinds of mahogany at first. The other varieties require much skill to smooth and, in case of the harder pieces, even to work at all; and these, however beautiful they may be, should be deferred until considerable proficiency has been attained.
Maple.—The maple grows freely in the United States, and is much used for a great variety of purposes, the sugar or rock maple being especially esteemed. It is close-grained, hard, strong, heavy, and of a light yellowish-, reddish-, or brownish-white colour (sometimes almost white, though found in varying shades), and can be smoothed to a satin-like surface and be given a good finish. It can be stained satisfactorily. The curly or wavy varieties furnish wood of much beauty, the peculiar contortion of the grain known as "bird's-eye" being much admired. Maple is extensively used for cabinet-work and interior finishing, floors, machine-frames, work-benches, turning, and a great variety of miscellaneous articles.
There are a number of varieties of the maple. The beginner should confine himself at first to the softer and straight-grained specimens, as the other kinds are hard to work and to smooth.
Oak.—Of all the broad-leaved trees the oak is probably the most valuable, and has for ages stood as a type of strength. It is widely scattered in various parts of the world, and nearly three hundred varieties have been noted.
Oak is distinguished for its combination of useful qualities. It is hard, tough, elastic, heavy, durable, stiff (except after steaming, when it readily bends), and durable when exposed to the weather or to the soil. Oak is more or less subject to checking. It is strongly impregnated with tannic acid, which tends to destroy iron fastenings.
American white oak. This important variety is found in North America, and from it is obtained most excellent timber. It is used for a variety of purposes too great to be specified, from the construction of buildings and ships to furniture and agricultural implements, carriages, etc. It is an invaluable wood.
British oak has long been held in the highest regard for its combination of valuable qualities, and has been used for more purposes than can be here mentioned.
The live oak, found in southern parts of North America, may be mentioned as a valuable wood, very strong, tough, and durable, which, before the introduction of iron and steel in ship-building, was extensively used in that business; but it is excessively hard and unsuited to amateur work.
Varieties of red oak are extensively used, but, though valuable, are of inferior quality to the white oak. Other varieties largely used in England and on the Continent are seldom marketed in the United States.
Pear.—The wood of the pear tree is somewhat like that of the apple tree. It can be readily carved.
Pine.—First and foremost among the needle-leaved trees comes the pine, of which about seventy species are known. The white pine, known in England as yellow pine and also as Weymouth pine, is widely distributed in America, and is, or has been, our most valuable timber tree, but seems to be doomed to rapid extinction, at least so far as the wide, clear boards and planks of old-growth timber are concerned, which are now exceedingly hard to obtain.
There is no better wood for the beginner than clear white pine for all purposes to which it is suited.
It is light, stiff, straight-grained and of close fibre, easily worked, can be easily nailed, and takes a good finish. When allowed to grow it has reached a large size (as in the so-called "pumpkin" pine), furnishing very wide, clear boards, of beautiful texture and with a fine, satiny surface. It is of a light yellowish-brown colour, growing darker with time. It is soft, resinous, and of moderate strength. Pine is cut into lumber of many forms, and is used for inside finishing of houses, for many purposes of carpentry and cabinet-making, for masts and spars, for clapboards, shingles, and laths, doors, sashes, blinds, patterns for castings, and a long list of different purposes. It holds glue exceedingly well and takes paint well.
Other varieties, as the sugar pine, the Canadian red pine, the yellow pine, etc., grow in America. White pine is also found in Europe. The Scotch pine or Norway pine, known also as red, Scotch, or yellow fir, and as yellow deal and red deal,[52] is the common pine of the North of Europe, hence its name, Pinus sylvestris, pine of the forest. It is hard, strong, not very resinous, and is extensively used.
Southern or Hard Pine. This very important timber is found on the Southern Atlantic and Gulf coasts of the United States. It is very hard, heavy, and resinous, with coarse and strongly marked grain. It is durable, strong, and not easily worked by the beginner, and is hard to nail after seasoning. It is extensively used for girders, floor-timbers, joists, and many kinds of heavy timber work, including trestles, bridges, and roofs, for masts and spars, for general carpentry, floors, decks, and interior finish, railway cars, railway ties, and many other purposes, and, in addition, for the manufacture of turpentine.
Other varieties of hard pine are sold and used successfully for the same purposes, all under the common name of hard pine, Southern pine, Georgia pine, yellow hard pine, etc. Another variety of hard "pitch" pine (Pinus rigida), often confused with the Southern pine, is heavy, resinous, and durable, but not suited for the better class of work.
Plum.—This is a fine-grained, hard wood, used for turning, engraving, etc.
Redwood.—The two varieties of the giant Sequoia of the Pacific coast are the Sequoia sempervirens and the Sequoia gigantea or Wellingtonia. The former, the most important tree of the Pacific coast, is of immense size (supposed to reach a height of even four hundred feet), red in colour, rather soft, light, and moderately strong, easily worked and finished, and very durable when exposed to the soil. It is used for general lumber purposes, carpentry, interior finish, posts, tanks, shingles, and a great variety of uses.
The S. gigantea or Wellingtonia, which has the largest trunk in the world, is also red in colour, coarse-grained, rather weak, soft and light in texture, and of great durability when exposed to the soil. It is used for lumber and general building purposes, posts, shingles, etc. These are the "Big Trees," thought in some instances to be even five thousand years old, and of which the familiar stories are told about a stage-coach having been driven through a hollow tree, and about twenty-five people having danced at one time upon a stump.
Rosewood.—This wood, of handsome grain and colouring, has been much admired and extensively used for veneering. It is hard and heavy and of a peculiar texture, which seems oily to the touch. It is not well suited to amateur work, and is expensive.
Satinwood.—This handsome yellowish-brown wood is hardly to be considered by the amateur except for the occasional use of a small piece.
Spruce.—The wood of the spruce, of which there are a number of varieties, is quite abundant, is light and straight-grained, and comparatively free from large knots. It is largely used for many of the same purposes as white pine, to which it is inferior for interior finish and fine work, but superior in strength, hardness, and toughness. Both white and black spruce are extensively used for carpentry, interior finish, flooring, fencing, and inferior wood-work generally. It has the great disadvantage of curling and twisting and springing badly, and is not as nice to work as white pine. Spruce of good quality makes good paddles, spars, and the like, and is valuable for such work. The wood of the Norway spruce is known in England as white deal.
Sycamore.—This handsome wood, found in various parts of the world, and of a light yellowish or reddish-brown colour, is esteemed for interior work. The medullary rays are noticeable. It is rather hard, but not very difficult to work. It is not durable for outside work exposed to the weather. Known also as Buttonwood.
Walnut.—See Black Walnut.
Whitewood.—Like white pine, whitewood is an excellent wood for the early attempts of the beginner.
Whitewood, which is by no means white, but greenish- or brownish-yellow, is the name applied to the wood of the tulip tree. This tree attains a large size, thus furnishing wide boards, which are of such straight and even grain and so free from knots as to be of great use for many purposes. It is brittle and soft, but light and very easily worked. It is not, for most purposes, as reliable a wood as white pine, but is extensively used in the wood-working arts. It is more liable to warp and twist than pine. It takes a stain exceedingly well.
Willow.—An important use of this wood is for baskets. It will not often be required by the beginner, except for whistles.
Yew.—This wood, like lancewood, is distinguished for its elasticity, and is highly esteemed for bows and the like.
Many other woods can be alluded to, as catalpa (for posts and the like), elder (for various small articles), dogwood (for turning and the like), gum (for various common articles), hornbeam or ironwood (for mallets, handles, wheel-cogs, etc.), poplar (for pulp), sassafras (for posts, hoops, etc.), teak (from the East, strong and valuable), tupelo (hubs of wheels, etc.), and a great variety of others which cannot be specified, as they are but seldom required by the amateur and never needed by the beginner.
Felling and Seasoning.—A tree should usually be cut for timber at or near its maturity, as a young tree has too much sapwood and will not be as strong and dense or durable, while an old one is likely to get brittle and inelastic and the centre of the heartwood is liable to decay, being the oldest portion. A young tree, though softer and not so durable, furnishes a tougher and more elastic wood, and sometimes has a finer grain.
Trees differ so much, and the uses to which the wood is to be put are so various, that no exact ages can be set for cutting—probably from fifty to one hundred years for good timber, to make a rough statement. Some trees furnish excellent timber at a much greater age than one hundred years. Pine is thought to be ripe for cutting at about seventy-five or one hundred years of age, oak at from sixty to one hundred years or more, and the various other woods mature at different ages.
Midwinter, or the dry season in tropical regions, is usually preferred for felling, because the sap is quiet. Decay sets in more rapidly in the sapwood and between the wood and the bark during the period of active growth, because of the perishable nature of the substances involved in the growth. Midsummer is considered equally good by some.
The various methods of cutting the log into the lumber of commerce have been treated in Chapter III., to which the reader is referred. In this connection it will be noticed that, although boards cut through or near the middle are, as a rule, the best, when they contain the pith they are sometimes valueless in the centre, as well as when, in the case of an old tree, decay has begun at that point.
As the water evaporates gradually from green wood exposed to the air but protected from the weather, one might infer that in time it would evaporate entirely, leaving the wood absolutely dry, just as the water will entirely disappear from a tumbler or a tea-kettle. This is not so, however. The drying goes on until there is only about ten to twenty per cent. of moisture left, but no amount of open-air seasoning will entirely remove this small per cent. of moisture, the amount varying with the temperature and the humidity of the atmosphere. It can be got rid of only by applying heat, kiln-drying, baking, currents of hot air, vacuum process, or some artificial method of seasoning. After having completely dried the wood by any of these methods, if it is again exposed to the atmosphere, it absorbs moisture quite rapidly until it has taken up perhaps fifteen per cent., more or less, of its own weight. So you see that, though you may by artificial means make wood entirely dry, it will not stay in this unnatural condition unless in some way entirely protected from the atmosphere at once, but will reabsorb the moisture it has lost until it reaches a condition in harmony with the atmosphere. Recent investigations show that the very fibre or substance of the wood itself imbibes and holds moisture tenaciously, this being additional to the water popularly understood to be contained in the pores or cavities of the wood.
There are various other methods besides kiln-drying (referred to in Chapter III.) of seasoning and of hastening the drying process. Wood is sometimes soaked in water before being seasoned. This assists in removing the soluble elements of the sap, but it is doubtful whether the process improves the quality of the wood. Smoking and steaming are also resorted to. Small pieces can readily be smoked, which hardens the wood and adds to its durability,—a method which has been known for centuries,—but care must be taken not to burn, scorch, or crack the wood.