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 326
8. 267. Molding Operations.—TheF.d. 498^ Three-Part principal typical operations involvedFlask. . , ,. , ,, in moldmg are as follows: (1) The drag flask is placed up-side down upon a mold-ing board or follower.(2) The pattern or dragpart of the pattern is laidon the molding board,Fig. 499. (3)… … 322 WOODWORK FOR SECONDARY SCHOOLS. left on top. (4) The drag is rammed up and struck ofif.Figs. 500 and 501. (5) A l)Ottom board is bedded onsolidly and the drag flask is rolled over, Fig. 502. (6)
Woodwork (Manual training)
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