Pattern making; a practical treatise for the pattern maker on wood-working and wood turning, tools and equipment, construction of simple and complicated patterns, modern molding machines and molding practice (1921)
Ritchey, James, Monroe, Walter W. (Walter William), b. 1869 · Chicago, American technical society · leaf 34
Cut by Core-Box Plane worked, from a center Hne on the face of the block, describing on each end of theblock a semicircle of the required radius; connect the extremes of the two end arcsby straight Unes on the face of the block, as shown in Fig. 36. Two very thinstrips of hard wood are tacked along… … Fig. 36. Block Laid Out for Core-Box Fig. 37. Protection of Edges in Forming out the semicircle as far as the strips will allow, as shown by the dotted arc ach,the strips are removed, when the work can be finished without materially affect-ing the corners at a and 6. When making the finishing cuts…
Patternmaking
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