The silicone mold is the most frequently used items, the requirements of resin or other plastic casting, toys, collectibles, figurines, props, model parts and other small plastic casting project to create can be seen. Silicone rubber is usually preferred because it can use a lot of material, it does not stick to itself or other objects, negating the need for release agent or a separating wall in the molding process. The most common type of silicone mold is composed of two parts of the mold, which will create a seamless final product.
Instructions
1
Make you want to copy the object model box. For smaller objects, from the building blocks of walls of the box, and launched a rubber mud bottom of the box flat. For larger objects, the establishment of sturdy cardboard or wooden box wall and bottom. Make sure the box to your model, the parties have at least 1/4 inch gap.
2
Half of the batch of RTV silicone rubber and catalyst are mixed together, you have a rubber brand packaging direction. Ensure that the catalyst is fully into the rubber mixing, creating a pale version of the catalyst.
3
The molding box with a pencil or marker mark the halfway point. Poured into the molding box of a number of Silastic and stop at this halfway mark.
4
Silastic model into the object until it is half the battle coverage and do not touch the sides of the molding box. So that half of the mold curing or drying, overnight or 12 hours.
5
The rest of the silicone RTV rubber mixed together, poured into the molding box, complete coverage of the model object. Rubber vulcanization overnight.
6
To take the molding box separately, separate from the mold and a half, and delete model objects. Suitable for silicone mold half back together, and to ensure them with a rubber band.
7
Carved in with a blade or knife line to join the cast in the mold above the hole. Cut holes are not deep enough to penetrate the rubber, to the internal cavity.