The silica gel raw material should be mixed with the curing agent, otherwise it will appear dry, or solidify uneven situation, the occurrence of this situation will lead to the scrap of the mold, should be avoided. If the size of this product is very large, it is necessary to use the brush mould, although it saves time and effort, but it is very expensive.

Because so big product USES the irrigation mode, waste silica gel increased costs, and the heavy products will be easy to crush the silicone mold lead to deformation or fracture, but you can choose to brush mould inside add several layers of gauze can increase the mould flexibility and strength, coupled with the external formwork support would be easy not to be a crush or deformation.

According to the size of the product to choose the suitable hardness of silica gel.

1 small products, general soft silicone more appropriate, because the silicone high when the mold will be very brittle, easily to be broken products small parts, that will also cause mould not durable.

2 large products, such as stone cement products province so hard so heavy, if choose soft mold silicone material, mould is more easy to crush, because a soft silica gel, its tensile and tear strength will reduce, will make mold deformation, will naturally reduce the service life.