Comment: if you are really hardcore

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In reply to comment: As a CNC Machinist...` (see in situ)

if you are really hardcore

Get David Gingery's Build Your Own Metal Workshop series and build it all from scratch:

1) The Charcoal Foundry
2) The Metal Lathe
3) The Metal Shaper
4) The Milling Machine
5) The Drill Press
6) The Dividing Head
7) The Sheet Metal Brake

Also, printheads for printing metal are coming:
http://reprap.org/wiki/MetalicaRap

“The welfare of the people in particular has always been the alibi of tyrants.” — Albert Camus