Stuccoing: Stucco the dipped wax molds with quartz sand, then dip into induration solution containing ammonium chloride &magnesium chloride and hang to dry. The whole process repeats 6 times.

• 对涂上涂料的蜡件组淋石英砂，再浸入含氯化铵和氯化镁等材料的硬化槽中硬化后进行干燥，然后进行下一层的操作，此过程重复6次左右后完毕。