The main use of silicone mold is made. The gypsum product mould gypsum. The requirements of mould silicone resin handicraft. Good tensile tear. Do so out of the mould was durable. Do resin crafts used molds. There are two requirements of one is to burn resistant. Because the tree fat will be fever. But the tensile resistant to tearing. Good. So many times before.
Silicone mold quality discrimination:
1, good brightness. Such high purity silica gel. That black impurity products. Is the powder distributor to reduce costs and add a few yuan a kilo.
2, the same weight bigger is better. Or add density and low powder is the main reason of small volume products. High density.
3, buy some time later. Silicone layered. Above looks like oil. The following is a powder that silicone mold more inferior.
Note: those long plus powder may be gypsum powder quartz powder. Calcium carbonate.