Casting metal parts from 3D-printed plastic or Styrofoam models ... so it’s refreshing to see a casting project using silicone molds to cast low-melting point metals. Of course if aluminum ...

One thing we didn’t see was how you can augment silicone parts with 3D-printed inserts. Of course, you don’t need 3D printing to make silicone items and molds. It just makes it easier.