Select the ground and handle thoroughly is the key factor in this stitch.Minced ground and then soaked again for interplay and combine the paper to offset mold inner layerThe second mold class is mixed minced ground truth granulesUse the iron shaped bone to mould bronze pouring is not broken whenThe outermost layer of cut and ground covering iron create a solid overallHeating the mold at high temperature, and surface hardening (core samples).The previous paragraph do not thoroughly and lack of experience when heated will readily break the mold, have to start over.
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