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 344
Fig. 543. Stop-OffCore. … Fig. 542. Balanced Core. heel print which makes the parting in molding simpler.Originally, straight, horizontal cores were laid into theimpressions made by the stop-off prints and the remain-ing space stopped over or tightly filled in with molding 340 WOODWORK FOR SECONDARY SCHOOLS, sand. Special…
Woodwork (Manual training)
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