Building a Full-Auto Gauss Gun
Okian Warrior writes "Adding to the 3-D printed gun/rifle controversy, Delta-V Engineering built a Full-auto Gauss gun (aka 'machine gun'), capable of firing 15 steel bolts from its magazine in less than two seconds. At 3% the muzzle energy of a .22, it's still in the prototype stage. Bullets are made from turned-down nails, and the gun uses no chemical propellants. The builder has posted the design notes online. Video of the gun in action is pretty interesting."
actually there are metal 3d printers. they are just not as common and generally not what many are speaking of when talking 3d printers at this point in time. I just did a quick google search and found this one fvor example http://www.3dsystems.com/3d-printers/production/spro-125-direct-metal
have you seen my sig? there are many others like it but none that are the same
http://thehomegunsmith.com/pdf/BSP-SMG_Book.pdf
Machining can be done with a file, this is largely how Khyber pass guns are made.
Give it up already.