Woodwork for secondary schools; a text-book for high schools and colleges, prevocational and elementary industrial schools (1916)
Griffith, Ira Samuel, 1874-1924 · Peoria, Ill., Manual Arts Press · leaf 328
Fig. 504. Placing Part to beRammed up in the Cope. Fig. 505. Sprinkling PartingSand. the solid pattern wholly within the drag. When thefollow hoard has been removed after the drag has beenrammed up and inverted, the molder must cope down, … Fig. 506, Cope Placed andSprue Pin Set. Fig. 507. Venting. that is, remove the sand about the pattern, until thepattern can be withdrawn without breaking the mold.The molder will now place that part which is to berammed up in the cope, Fig. 504. After the parting has 324 WOODWORK FOR SECONDARY…
Woodwork (Manual training)
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