Now, a group called Defense Distributed, a grassroots research and development collective whose volunteer engineers and designers span Arkansas and Texas, are utilizing 3D printing for something they say is unprecedented. Defense Distributed is entering phase two of their development of a digital file to print a plastic civilian defense system, the WikiWeapon. “The WikiWeapon will be capable of firing one .22 round. It is both functional and symbolic”.
This breakthrough begs the question, has gun control obsolesced? Defense Distributed will not be producing any physical objects or digital files for sale. The group intends to freely share the files they create for online sharing once fully developed and tested. “When we’re done, seed and hack this file—improve it if you can” they added.
It’s a nifty idea, but there some things to consider. You can see their requirements here. You’ll need a good spring and metal firing pin to whack rim. Im skeptical a solenoid has the necessary punch. I think they are underestimating how much impact force it takes to ignite a rimfire round reliably. The barrel also has to be metal. The rest of the gun can certainly can be made from plastic, and metal parts that would accomplish the necessary tasks shouldn’t be hard to find. There are 3D printers, beyond the reach of hobbyists for now, that can lay down metal, but it’s not of the quality that it would contain even a .22 LR round safely. A lot of people make the assumption that the .22 LR is a low pressure round. It’s not. The .22LR will generate 24,000 PSI of pressure. In comparison, the .45ACP only generates 21,000, and a .38 Special 17,000. Granted, the overall pressure the .22 needs to contain is less because of the lower area, but that’s still enough to turn a 100% plastic gun into a 100% plastic grenade, so that’s something these folks need to consider in their design. The barrel has to be metal.
6 Responses to “Open Source 3D Printed Gun”
- Open Source Printable Firearm Revolution…. « N.U.G.U.N. – New User of GUNs Blog - [...] http://www.pagunblog.com/2012/08/22/open-source-3d-printed-gun/ [...]
- Company Demands Return of Leased 3D Printer | Shall Not Be Questioned - [...] be used to make a gun, and terminated his lease, suggesting legal issues. We talked about this some here. ...