This tutorial on how to cast metal parts from 3D printed silicone molds is a perfect example of how useful a 3D printer can be when you are looking to make a custom and durable metal part at home.

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.