. Foundry practice; a treatise on molding and casting in their various details. Fig. 49. a level face, which gives the guide for the location of thesweep to be used later. The collar is adjusted to give theouter edge of the cover at the floor line. The surface ACB DRY SAND MOLDING 63 is swept by revolving the sweep away from the cuttingedge, as indicated at H. The sweep and collar are removed and the surfaceslicked for a parting surface as usual. Parting sand isthen put upon the surface and a cope placed in positionand staked at the corners to allow replacing after removingfor finishing the mo
. Foundry practice; a treatise on molding and casting in their various details. Fig. 49. a level face, which gives the guide for the location of thesweep to be used later. The collar is adjusted to give theouter edge of the cover at the floor line. The surface ACB DRY SAND MOLDING 63 is swept by revolving the sweep away from the cuttingedge, as indicated at H. The sweep and collar are removed and the surfaceslicked for a parting surface as usual. Parting sand isthen put upon the surface and a cope placed in positionand staked at the corners to allow replacing after removingfor finishing the mold. A short pipe or box is placedaround the spindle to allow lifting the cope, as at P, The cope is rammed as usual with the necessarygates and risers. The cope is lifted off, finished and
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