. The teacher's handbook of slöjd : as practised and taught at Naäs, containing explanations and details of each exercise. concave, and an iron to correspond. It is used in planinground surfaces.—Trs.] 3. The compass plane.—In this plane the sole is curvedlengthwise, and the iron is an ordinary double one with astraight edge. It is used in planing hollow curved of different degrees of curvature are required, accordingto the radii of the surface to be planed, but it is not necessarythat the two should accurately correspond. The curvature of the sole must not be lessthan the curva
. The teacher's handbook of slöjd : as practised and taught at Naäs, containing explanations and details of each exercise. concave, and an iron to correspond. It is used in planinground surfaces.—Trs.] 3. The compass plane.—In this plane the sole is curvedlengthwise, and the iron is an ordinary double one with astraight edge. It is used in planing hollow curved of different degrees of curvature are required, accordingto the radii of the surface to be planed, but it is not necessarythat the two should accurately correspond. The curvature of the sole must not be lessthan the curvature of thesurface of the work, but itmaybe greater. The differ-ence, however, if any, mustbe slight, because the twoopposing surfaces mustcorrespond closely enoughto permit of the steadyFig. 6^. Compass Plane, h guidance of the tool. One compass-plane, therefore, will not suffice for surfaces ofgreatly varying curvature. American compass-planes of iron, called adjustable planes,have flexible steel soles, which can be adapted to surfaces ofdifferent degrees of curvature. One plane of this kind istherefore 3. The Old Womans Tooth-Plane, and Dove-tail Filletster. The old womans tooth-plane is quite unlike the planeshitherto described. It consists of a block of wood on the innerside of which is fastened an iron, secured by a thumb-screw(Fig. 63). The construction of some planes of this kind ismuch simpler; they consist merely of a parallelopiped piece TOOLS. 103 of wood, in the middle of which is wedged a straight or curvediron. In this case the blade of a firmer chisel is often used.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectmanualt, bookyear1892
