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 86
can be readily removed from the mold. In making themold from this pattern, the cylindrical hole in the casting will bemade by the use of the dry-sand core as described in the section onMolding Practice in Part I. PATTERN MAKING 69 The draft in this instance should be | inch per foot. It is wellto… … lluiiiiiiiljijijjjiiiiliiis llillil i ^ i i! iiii!;:!! i iilMMIililliliUlHIIIlin
Patternmaking
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