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 179
n Fig. 279, should be screwed to the outsideof these wooden patterns to prevent warping. They should haveliberal draft, say about 3 inches to the foot, and should be finishedto some color different from the body or core-print portions of thepattern. The imprints of these stop-offs are filled in… … Stop off- Fig. 279. Bottom of Vane Core Box PATTERN MAKING 161 wood or iron, and is held in place by two small steel dowels. Thepattern maker should consult the molder for the dimensions ofthis gate. The gate continuation should be made of a dry-sand core,
Patternmaking
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