This tutorial on how to cast metal parts from 3D printed silicone molds is a perfect ... 2 [Matt Borgatti] casts the mold using Smooth-On Mold Star 15 that can withstand heat up to 450 °F ...

There’s less than a month until the next Star Wars is released ... it was time to create the mold. [Bill] used a two-part silicone mold for the basic shape. The actual casting was done by ...