It's even worse than that! They're making model railroad parts this way, and there is now a 3-D printer on board the International Space Station. With the worsening relationship with the Russians, this could prove "interesting"...the Russians already pack a shotgun aboard their Soyuz spacecraft!
(Actually, the shotgun is to protect the Soyuz crew from wolves or bears after they land, before recovery crews can get to the spacecraft! )