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.

At such low temperatures, pewter can be melted down on a common hot plate. Think of it as an easy way to get into the world of metal casting – no forge required.

Sparks were flying as local kids and families ignited their imaginations last week when the WOW Mobile Metal Lab rolled into ...