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.

Now the folks at FormLabs have turned the whole ‘casting metal and 3D printer’ thing on its head: they’re printing sacrificial molds to cast pewter. There are two techniques demonstrated in ...

MIT researchers 3D print formwork molds using mud - replacing the more costly wood formworks for concrete construction.