A practical treatise on mechanical dentistry . to rest upon on the molding-table. The sand-ring is of strong hoop-iron, and should fit easily andtruly on the grooved surface of the molding-plate next to theprojections or tabs. When molding is to be done, the molding-plate is placed in thesand-drawer or on the table, grooved side upward, and on it theshallow plaster model (from Y\ to one inch deep, as may be de-sired) (Fig. 67), in such a position as to bring the cone-shapedaperture where most strength is required in the die. The ironsand-ring is then put on the molding-plate (Fig. 68), and san
A practical treatise on mechanical dentistry . to rest upon on the molding-table. The sand-ring is of strong hoop-iron, and should fit easily andtruly on the grooved surface of the molding-plate next to theprojections or tabs. When molding is to be done, the molding-plate is placed in thesand-drawer or on the table, grooved side upward, and on it theshallow plaster model (from Y\ to one inch deep, as may be de-sired) (Fig. 67), in such a position as to bring the cone-shapedaperture where most strength is required in the die. The ironsand-ring is then put on the molding-plate (Fig. 68), and sand ispacked in in the usual way. When the packing is finished, theiron ring full of sand, with the molting-plate, are turned upsidedown (Fig. 69). The molding-plate is then removed, exposingthe model, which is withdrawn by the aid of a point and hammerin the usual way. The mold having been examined, and any loose particles ofsand blown out of it, zinc sufficient to barely fill the mold is METALLIC DIES AND COUNTER-DIES. 163 Fig. 67. Fig.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectdentist, bookyear1903
