Woodworking for beginners; a manual for amateurs . than most of the chisels you are likely to use, it re-quires more care to sharpen. The plane-irons can be ground toa somewhat more acute angle than the chisels, although the jack-plane, which is used for rough work, may require more strengthat the edge. In rubbing the edge upon the oilstone^ do not attempt to smoothdown the whole bevel made by the grindstone, but first lay thetool lightly on the stone as shown in Fig. 670^?, then raise thehandle until the upper part of the bevel is very slightly raised,—barely enough to clear the stone (Fig. 6
Woodworking for beginners; a manual for amateurs . than most of the chisels you are likely to use, it re-quires more care to sharpen. The plane-irons can be ground toa somewhat more acute angle than the chisels, although the jack-plane, which is used for rough work, may require more strengthat the edge. In rubbing the edge upon the oilstone^ do not attempt to smoothdown the whole bevel made by the grindstone, but first lay thetool lightly on the stone as shown in Fig. 670^?, then raise thehandle until the upper part of the bevel is very slightly raised,—barely enough to clear the stone (Fig. 670^),— and then pro-ceed with the whetting, thus making a second or little bevel atthe edge (Fig. 671). Tools and Operations 483 The tool must be moved back and forth very steadily or insteadof a second bevel the whole edge will be rounded (Fig. 672) andwill not have the requisite keenness. The angle of this secondbevel is usually about ten degrees greater than the long bevel, orthirty-five degrees, although the angles of sharpening should be. Fig. 670. varied slightly according to the hardness of the wood and thekind of work to be done; but where you have only few tools andmust use them for all kinds of work you cannot always, as apractical matter, pay much regard to such variations, as of courseyou cannot keep regrinding your tools every time you begin on anew piece of wood. Just how acute to make the edge you mustlearn by experience, according to the conditions of your work.
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