قراءة كتاب A Manual of Wood Carving
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tag="{http://www.w3.org/1999/xhtml}a">18. This is like the three sides of a square. It is for removing wood on each side of a vein or leaf, or similar delicate work. It is not very commonly used. IV. The Parting Tool or V, straight or curved. This is a useful tool for outlining a pattern or veining leaves. Beginners find it, like the Macaroni, rather difficult to sharpen, or to keep an edge on it. It must not be used recklessly for carving, as it is apt to break unless handled with care. It should be kept with a cork on the end.
It is a question among experts as to whether the tools for beginners should have long or short handles, which is as sensible as if they should debate whether the pupils should have large or small hands. General Seaton, who is in other matters a good authority, declares that “small, short, neatly-turned boxwood handles must be avoided; they are nearly useless. Get good-sized beech or ash handles quite five inches long, and if the steel is four or four and a half inches long you will have a really serviceable tool.” Common sense teaches that between a child or a young lady who has a palm “the size of a cardinal’s seal” (to borrow a simile from Benvenuto Cellini), and a workman who would burst a number ten glove, there must be very great differences in the size of handles, and it is certain that for young beginners short ones are to be advised. If they are not to be obtained ready made, then take an ordinary long handle, saw it off to the requisite length, say from three to three and a half inches, round the sharp edge of the wood, firstly with a knife or chisel, then with a rasp, and finish it off with glass-paper. See that the tools when set into the handles are well ringed and firm. In most shops it is usual to sharpen them if it be required. After becoming accustomed to such handles the pupil may, as he progresses, familiarize himself with those which are in general use.
There is really only one trouble in wood-carving. This is the sharpening the tools, and keeping them in good condition. For this the grindstone and oilstone are indispensable, and the beginner must take pains to learn to sharpen his tools well and readily.
Sharpening. Tools which are as yet unground, or which have had the edge broken, may, with patience and care, be sharpened on a harsh flat stone, but round grindstones which revolve with a handle are not dear; you can, however, always get your tools ground by any carpenter. Every carver should therefore, if possible, own one of these grindstones. It will serve as well for a large class as for an individual. The next indispensable is the oilstone. This is to be found of different kinds; the ordinary Turkey stone, set in a block of wood, will answer for firmers, skews, and flat gouges, for finer tools the best Arkansas stones may be employed. Before using one, let fall on it a few drops of oil, which is to be kept in a small can with a narrow spout, made expressly for such dropping. Have a coarse rag, and when you have done with the stone, always wipe it clean of the oil. Take great care not to wear a hollow in the middle of the stone. It is by far the best plan to get some wood-carver or carpenter to show you how to sharpen the tools. There are very few places where there is not somebody who can teach this art. It is usual to have a box-cover to the oilstone, which should always be over it when not in use, to prevent dust from settling on the surface. A very little dust indeed combined with the oil is a great hindrance to sharpening.
Slips. These are pieces of Arkansas, Turkey, and other stones, made of a variety of shapes, to fit the inside of such tools as cannot be sharpened on a flat surface, like that of oil-stone. They require great care in handling lest the fingers be cut. To avoid this, take a piece of wood, and cut a deep groove in it, exactly adapted to hold the stone firmly, leaving as much of it projecting as may be required for use, Fig. 19. If you cannot obtain a slip exactly suited to any particular tool, then grind or cut it to shape on the grindstone or with a file; some carvers use a very coarse whetstone adapted to this purpose. The safe method of using a slip when not mounted in wood is to “lay the back of the gouge at an inch and a half from the edge on the edge of the table; the edge of the tool must be slightly raised, and the slip can then be applied with perfect safety and with great effect.” (Seaton.) The V, or parting tool, is difficult to sharpen because, until one has had practice with it, it is hard to cut down each side in exact uniformity with the other. For this it is necessary to have a slip ground to a V edge, so as to exactly fit the inside of the tool.
The Strap. This is a piece of hard, smooth leather, glued on a flat bit of board. This may be prepared with sweet oil and emery powder, or Tripoli, to be renewed as occasion requires, or with a preparation of lard and crocus powder. Emery paste sold at the tool-shop will answer for all ordinary work. When no strap is at hand a final sharp, or a razor edge, may be given even on a smooth pine board, especially if a very little fine air-dust be on it.
Sharpening the tools is like threading the needle in sewing, or putting a point on lead pencils when drawing, something which is a great trouble, and a constant interruption to earnest work, yet which must be constantly seen to. Never go on carving for a second if you find that a tool is growing in the least dull or “scratchy.” There can be no good work whatever without really good tools in perfect order.
It may be observed that tools are never ground quite so much inside as they are externally. Also that this double grinding gives a sharper cutting-edge; but gouges require very little edging inside.
Should the carver be unable to obtain a Turkey or Arkansas stone, he may use smooth slate, or almost any stone which is tolerably hard.
Wood. All wood for carving should be of the best quality, well seasoned, and free as possible from cracks, knots, or other irregularities. Fine white pine or deal, being very easy to cut, is suitable for a beginner. Lime and pear-tree wood, like pine, are even in the grain. American walnut is also easy to cut. It is of a beautiful dark colour, which is much improved by oiling and age. With this, but tougher than the preceding, are beech, elm, and oak. Poplar, yellow deal, and the so-called American wood (known as poplar in America, Middle States) are useful for many kinds of work. The carver should accustom himself, as soon as possible, to oak, as a hard wood is by no means hard to carve as soon as a little skill is acquired. Bone, ivory, and pearl-shell, which at the first effort seems to be almost impenetrable, after a few days are “worked” with great ease.