The heavy-duty spring in the base swings the arm so that the molten metal is forced into the flask. The broken arm construction assures that the metal will flowing a straight line, producing dense castings. NOTE: For safety reasons, casting machine springs must be replaced at the factory.
Accommodates flasks from 1-1/4" diameter up to 3-1/2" diameter and 2-3/4" high. The set includes balance weights, crucible No. 22.454, three steel flasks, three flask cradles, three sprue bases, and flask tongs. Shipping weight 27 lbs.