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 (1916)
Ritchey, James, Monroe, Walter W. (Walter William), b. 1869 · Chicago, American technical society · leaf 97
f Pattern Stock to Warp Or Good Better Fig. 157 Method of Gruing Stock to PreventTrouble Shown in Fig. 156 ef, Fig. 156. This is caused by the removal of considerable woodin the process of turning, at the angles aaaa, thus exposing freshsurfaces which are farther removed from the original surfaces… … Fig. 158. Core Box for Pattern, Fig. 151 of the annular growths, and also to the more or less thorough sea-soning of the wood, in the direction indicated. If the pattern is intended for temporary use only, it may beconstructed as above; but if durability and permanence of shape arerequired, the two…
Patternmaking
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