While I can see the interest for a pro straight away, I was curious as to whether it would be applicable to hobbyists. So I wrote to them to ask for a "tutorial" : how to do it in your garage with "DIY" equipment. Say a 3D printer, a gas burner and a steel container (obviously thinking only about aluminium here). No feedback.

While I would have been interested, it seems they are either at a really early stage or fear to be copied if they put out too much data. I can understand that but it's hard to be convinced to put money on the table either way.