. Teacher's handbook of Slöjd . nto a four-sided tang, whichis set into a wooden handle. The tool in working is driveninto the wood either by the pressure of the hand, or byblows from a mallet. In order that the handle may not slip,or twist round when grasped, it is generally made with foursides, greater in breadth than in thickness, and with thebroader sides rounded.* To keep the handle from splittingunder violent pressure, the base of thetang is furnished with a shoulder, onwhich the handle rests. These tools vary greatly in size both asregards length and breadth. The latterdimension determi
. Teacher's handbook of Slöjd . nto a four-sided tang, whichis set into a wooden handle. The tool in working is driveninto the wood either by the pressure of the hand, or byblows from a mallet. In order that the handle may not slip,or twist round when grasped, it is generally made with foursides, greater in breadth than in thickness, and with thebroader sides rounded.* To keep the handle from splittingunder violent pressure, the base of thetang is furnished with a shoulder, onwhich the handle rests. These tools vary greatly in size both asregards length and breadth. The latterdimension determines the dimensions ofthe edge. The broadest tools are gener-ally also the longest. In order to be able to execute all thedifferent kinds of exercises which occur,it is necessary to have a complete set ofeach description of tools. There areusually 12 in a set, all of different of this kind are classified accord-ing to the different shapes of the bladeand edge, and the different methods ofsharpening as follows :—. Fig. 49. Firmer Cliisel I A. Blade and handle. B. Blade showing a face and edge. C. Blade, c. shoulder, d. tang. 1. Chisels. The face side A. of the firmer chisel is perfectly fiat. 1. The Firmer Chisel (Fig. 49). The breadth of the blade,which varies from IJ inches to \ inch, is generally muchgreater than its thickness. The angle between the beveland the flat face varies from 25° to 30°. The firmer chisel is used in paring plane or convex surfaces;in mortising, when it often does duty instead of the mortise* English handles are generally turned in boxwood or beech.—Trs. TOOLS. 91 chisel; in curved work ; in facing off; and, generally speak-ing, in all cases where no other tool can be made use of withadvantage. 2. The Mortise-chisel (Fig. 50). The thickness of theblade generally exceeds its breadth, which varies from -J inchto 1 inch. The front face of the blade is always a littlebroader than the back. The mortise-chisel is used for mortising; and,
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