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 342
FiG. 535. HorizontalDry-Sand Core. PATTERN MAKING. 337 … Fig. 536. Core-Box in Use. maker in pasting two parts together will often determinewhether a box is to be made of one or two halves. 279. Vertical Cores and Core-Prints.—Vertical cores are such as rest in avertical positionwhen in the mold. For economy oftime and materialcor e-p r i n t formsshould…
Woodwork (Manual training)
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