Repair the mold:Lost wax casting to remove residual flash or parting line in the wax models, use the blade cutting edge along the wax models carefully and gently cut off flash or parting line, two sides for formation of burrs peel to horizontal and vertical peel an oblique cutting, wax models shall not damage, for a small flash may also directly with a soft cloth wipe.Wax mold cavity repair: there is big and long and narrow niche on wax models, application of repair, wax, repaired, shape to the right.Bubble repair: all bubbles must prick on wax models, with repair, wax, repaired, shape to the right.Flow mark fixed: for polishing parts, machining parts, petroleum jelly wax, be careful not to hurt the wax pattern itself.In the wax models using wax removal lon-izing blew the crumbs, put in the flat, according to the technical requirement to quarantine waiting for inspection.