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 182
ow^ be taken from the core, which appears asin Fig. 282. Bottom Core. The core box for the bottom core is shown inFig. 283, and the core in Fig. 284, and in the radial section of theassembled cores, Fig. 286. The number of flat cores to go aroundshould not be the same as the number of vane cores,… … ^^ Diameter ofJp/nd/e Fig. 285. Gage for Setting Bottom Cores vane cores. The illustration of the core box shows the construc-tion; the thickness of the bottom should be about | inch, and thesides about 1| inch. The bottom can be made of pine or mahogany,and the sides of mahogany, maple, or birch.…
Patternmaking
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