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 325
lder, one cannot have a very ^ „ clear understanding of Hinges ^ the requirements forgood patterns withouta knowledge of thefundamental operationsof molding. Molding is dis-tinguished as floor or bench according as it is doneon the floor or on a .bench. Fig. 496 illustrates what isknown as a snap… … Fig. 496. Snap Flask. 320 PATTERN MAKING. 321 floor with its sand, and the flask removed that it may beused to hold sand for still other molds, the snap fasteningspern.itting its easy removal. In Vv^. 497 is shown a floorflask. Tl is flask, like the snapTask, is divided into two parts,tie top pare…
Woodwork (Manual training)
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