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 94
ectly straight, a slight draft—yg i^^ch in 12inches—being given to the ends only of the pattern and to-those ofthe core prints. A slight curve of yg-inch radius should also be madeat the intersection of the body of the pattern and the inside of theflange at a a. The wood in being prepared for this…
Patternmaking
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