High school manual training course in woodwork, including cost of equipment and supplies and studies on trees and wood (1905)
Ritchey, Samuel Edward, 1866- · New York, American Book Company · leaf 165
sh blisters, what must be done? METHODS OF MOLDING A pattern maker should know something of mohUng,that his patterns may be removed from the sand easily. A casting is generally made in molding sand, heldin place by a flask, a frame of iron or wood, withneither top nor bottom. The flask is made in… … or nowel; the two parts fitting on each other bymeans of pins and a corresponding way, as at A, B(Fig. 292). The wooden pattern for the casting may be rammedup wholly in the drag, or partly in the di-ag and cope. When rammed up in both parts, the pattern is some-times made in two parts, so that it…
Woodwork (Manual training) · Cabinetwork
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