3D Printed Rifle Breaks After 6 Shots

ylexot

Super Genius
Watch: 3-D Printed Assault Rifle Breaks After Just 6 Shots | Popular Science

There you saw Cody Wilson, who heads the project, test-fire one round to see if it worked, and then hand the weapon to another member of his group, who only unloaded five rounds before the gun fell apart. The magazine had 10 rounds.

The team thinks the problem was recoil, which caused the plastic to become unhinged. The threads connecting the receiver to the stock worked just fine--the o-ring just snapped. The group explains further in their blog post.

Darn. Keeping an eye on their progress and thinking of building a 3D printer... :whistle:

BTW, here's the printer I want to build:
http://reprap.org/wiki/Rostock_MAX
 

ylexot

Super Genius
Well, the lower receiver doesn't really take much load. The upper is where the big forces are. Think about this...there are quite a few polymer framed handguns out there. You should be able to print your own frame and then just buy a slide and some internals (pins, springs, etc.). Just don't try to sell it.
 

Larry Gude

Strung Out
A little help here.

If I understand this, wherever I get the file from, I need the equipment and raw materials to build the thing, yes?

So, technically speaking, as long as I have plastics and metals and the equipment to form them into parts, put them together...?
 
C

czygvtwkr

Guest
There are protyping websites that you can upload files to and they will make the parts and send them back to you fairly cheaply. One of the ways that can build the parts is FDM (printing).
 

itsbob

I bowl overhand
A little help here.

If I understand this, wherever I get the file from, I need the equipment and raw materials to build the thing, yes?

So, technically speaking, as long as I have plastics and metals and the equipment to form them into parts, put them together...?

I can see using the three D printer to make castings..

Print your gun part, encase it in sand, pour in your molten metal which melts and displaces the plastic... perfect casting every time.

It can probably print all usable parts but springs...
 

itsbob

I bowl overhand
A little help here.

If I understand this, wherever I get the file from, I need the equipment and raw materials to build the thing, yes?

So, technically speaking, as long as I have plastics and metals and the equipment to form them into parts, put them together...?

I don't think you need a "file" but an original copy..

If you HAVE an AR 15, you can take it down and scan it and produce the parts.

That's my understanding anyways.

We're all going to resort to being the Mujhadeen.. making guns in our garages and basements to ward of the Sovie... I mean Liberals.
 

ylexot

Super Genius
I don't think you need a "file" but an original copy..

If you HAVE an AR 15, you can take it down and scan it and produce the parts.

You can scan parts that you have, but chances are that the scan won't have the precision needed for a firearm. I'd bet that the 3d printer files started from the blueprints instead of scans of actual parts. That's more precise and probably easier than scanning.

BTW, 3d printer files are pretty easy to get :whistle:

DEFCAD
 

Gilligan

#*! boat!
PREMO Member
You can scan parts that you have, but chances are that the scan won't have the precision needed for a firearm. I'd bet that the 3d printer files started from the blueprints instead of scans of actual parts. That's more precise and probably easier than scanning.

BTW, 3d printer files are pretty easy to get :whistle:

DEFCAD

3D precision scanners are becoming ever more common and prices continue to fall.

As for feeding the 3D printer, we use Solidworks and Rhino3D..the same design programs that we use to feed our CNC machines. Having an original drawing of a part allows you to create the 3D model, of course,...
 

ylexot

Super Genius
How One Group Is Trying To Skirt Federal Regulations On Its $50 3-D Printed Gun Part | Popular Science
Enthusiasts of gun-law loopholes, this might be your new favorite workaround. A project at the crowd-funding site Rockethub wants to create a 3-D printed gun part for just $50. The twist: the part is only 80 percent complete, so like an Ikea desk you'll have to finish the rest of it yourself.

Started by 2nd AM Arms, the project promises to make a lower receiver for an AR-15 semiautomatic rifle. The lower receiver is what holds all the working parts in a gun. The receiver is so important that under U.S. law, a receiver on its own is still treated as a firearm, and requires a serial number. The argument made by 2nd AM Arms, however, is that an 80-percent completed receiver is just part of a gun component, not a full-blown firearm, and as a such is not subject to the same degree of federal regulation.
...
Making the lower receiver is only one of the goals of this project. Obviously, there's a larger agenda here: to send a political message. Just look at the other donor rewards. At the lowest level of support, 2nd AM Arms will mail a copy of the 2nd Amendment to President Obama and Sen. Dianne Feinstein (D-California), both of whom have expressed interest in stricter gun laws. All higher pledge levels include T-shirts featuring the 2nd Amendment, and if you pledge anything above $50, you get a commemorative lower embossed with the 2nd Amendment. Finally, if the project meets its funding goal (which it had as of press time), 2nd AM Arms pledges to donate 2 percent of its funding to the NRA.

:yay:
 

somdfunguy

not impressed
Check out what my new license plate is going to look like

a2a4u8ap.jpg
 
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