This is a moldmaking technique that may be used to reduce the amount of silicone used for a mold. By conforming the mold to just 1/2″ outside the pattern the overall cost of the silicone mold is reduced. We used our 73-25 silicone for this mold as it is a very low viscosity silicone.
Get this kit here:
https://www.brickintheyard.com/collections/kits/products/platsilmoldingandcastingkit
Post time: Jun-26-2017