Silicone Molding and Resin Casting

This is a little tutorial for resin casting. There are two parts for resin casting: making the mold and making the casts. The first step is to make the molds. I like to use legos to make the mold containers because they’re plastic and I can basically build a box of any shape and size. The master piece is measured and a box is built around the master. The master is then placed inside the box. The material I’m using is RTV silicone rubber and comes in two parts, the silicone base and the activator. The base and activator is to be mixed by weight, at a ratio of 10 parts base to 1 part activator. Your standard digital kitchen scale is very handy here when measuring. Using some disposable cups, the RTV is mixed. Once thoroughly mixed, the silicone … Read More