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3D Printed AR15 Much Improved, More Reliable
Gun Watch ^ | 12 January, 2013 | Dean Weingarten

Posted on 01/11/2013 7:40:27 AM PST by marktwain

Major improvements have been made in 3D printed AR15 rifles. The part of the rifle that is defined as a gun by federal law is the only part printed. The rest of the parts are commonly available on the free market.

People have made guns at home since guns were invented in the 1500’s or before. However, the ability to print out your own AR15 lower receiver at home, without having to use steel files, a grinder, or other home workshop tools, has caught the attention of the public in this digital age.

Defense Distributed is the organization that aims to make the promise of the Second Amendment a practical reality for everyman at the touch of a button. No longer will criminals in and out of government be able to be reasonably certain that their victims are unarmed.

The first AR15 lower printed by Defense Distributed was matched to a barrel chambered for the 5.7x28 cartridge, a pistol/rifle round less powerful than the more common .223. It failed after six rounds.

All of their design work and testing is now being done for and with the .223 cartridge. Several different printers and technologies have been tested. Stress analysis with sophisticated engineering design tools has been used to reduce the number of prototypes required. The lowers will now work reliably for 40-60 shots before failing. The highest round count so far has been over 80.

The failures occur at the rear take down pins, through to the hand grip.

Defense Distributed believes that their latest improvement will be reliable for 100 rounds. They expect to release the build files to the public in the next few weeks.

They will dedicate it to Joe Biden and company.

Dean Weingarten


TOPICS: Business/Economy; Computers/Internet; Hobbies; Politics
KEYWORDS: 3d; ar15; banglist; defensedistributed; printer; youwillnotdisarmus
This story is original content of Gun Watch. Pictures are from Defense Distributed. Permission granted for wide distribution by the author.
1 posted on 01/11/2013 7:40:32 AM PST by marktwain
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To: marktwain
Kneel down to God, stand up to tyrants.

Molon Labe.

2 posted on 01/11/2013 7:47:21 AM PST by SENTINEL (I lie, I cheat, I steal, I communize, I sacrifice unborn babies, I'm Harry Reid and I'm a mormon)
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To: marktwain
Defense Distributed believes that their latest improvement will be reliable for 100 rounds. They expect to release the build files to the public in the next few weeks.

They will dedicate it to Joe Biden and company.

Lol! I'm surprised the feds haven't already raided this group on trumped up charges (drugs/kiddy porn) to make an example for any with similar ideas.

3 posted on 01/11/2013 7:50:53 AM PST by apillar
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To: marktwain

Fer crying out loud I would think grade schoolers know how to work that problem. Print in an area that receives a stamped steel plate with just a rivet or something.

While making an AR lower is a slap in the face to the feds making 20 million one shot disposable Next Generation Liberty pistols may be strategically better.


4 posted on 01/11/2013 7:52:42 AM PST by Eye of Unk (AR2 2013 is the American Revolution part 2 of 2013)
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To: Eye of Unk

I’m curious as to whether they’re trying to use the same receiver wall thickness as the original aluminum version. The polymer lowers that I’ve seen for sale are all considerably thicker (longer hammer and trigger pins are not needed, but longer push-pins are).


5 posted on 01/11/2013 8:00:47 AM PST by Charles Martel (Endeavor to persevere...)
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To: Eye of Unk
While making an AR lower is a slap in the face to the feds making 20 million one shot disposable Next Generation Liberty pistols may be strategically better.

They are actively working that issue. They are also working to have printed standard capacity magazines. They say that the magazines are very easy to do. I posted a story on the files available for an AR 15 magazine, and Cody Wilson of Defense Distributed says that people have successfully printed AK magazines without a problem.

More later when I have enough for a story.

6 posted on 01/11/2013 8:07:01 AM PST by marktwain
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To: Charles Martel

That was my thought as well, I am very enthusiastic about the 3D process, to the point I may sell one of my gun safe queens to buy an entry level printer, as a machinist and fabrictor who has worked in a fiberglass putrusion and plastic extrusion plant as a die maker I can see ways to change the application.

For the high stress area it may require an insert of aluminum or an engineered plastic like delrin with thicker ribs and longer pins.


7 posted on 01/11/2013 8:08:11 AM PST by Eye of Unk (AR2 2013 is the American Revolution part 2 of 2013)
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To: SENTINEL

As the 1776 revolutionaries said “No King but Jesus!”


8 posted on 01/11/2013 8:08:26 AM PST by marktwain
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To: marktwain

Why don’t they just make the exterior thicker? Make indents where the selector goes and longer pins.


9 posted on 01/11/2013 8:08:40 AM PST by US_MilitaryRules (Unnngh! To many PDS people!)
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To: US_MilitaryRules
They are working it. They have considerable talent and some money supporting them now. It is happening. They sound very confident.

I believed that this interim report would be of interest, as the old media is ignoring them.

10 posted on 01/11/2013 8:12:10 AM PST by marktwain
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To: marktwain

There is about a 1.5 million magazine back order going on across America, what if a million people just buy a 3D printer and each make at least a dozen for themselves, and a couple more for their friends.

Mags are not the problem but they make the progressives feel all warm and fuzzy when they believe a ban against them is the solution. Frankly I’m surprised Obama hasn’t made any effort to attack the ownership and usage of 3D printers to make mags.

It would be like banning bathtubs during the prohibition when they were used to make gin.


11 posted on 01/11/2013 8:13:36 AM PST by Eye of Unk (AR2 2013 is the American Revolution part 2 of 2013)
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To: Eye of Unk
Next Generation Liberty pistols may be strategically better.

20 million liberty 10-100 round pistols would be better yet.

12 posted on 01/11/2013 8:17:03 AM PST by going hot (Happiness is a momma deuce)
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To: marktwain

Seeing where it’s breaking, it seems like a little fiberglass fiber sheeting and epoxy placed in a strategic location before firing might significantly extend the life.


13 posted on 01/11/2013 8:18:29 AM PST by Real Cynic No More
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To: Eye of Unk

What if some of those magazines end up in congressional staff’s back yards.. I suppose they would get the “Gregory” treatment.


14 posted on 01/11/2013 8:21:32 AM PST by marktwain
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To: going hot

Not enough ammo to feed a million pray and sprayers.

The shelves are bare right now, all Obama has to do is to shut down the ammo shipping. Smart people will not waste ammo at the range.

I would think 20 million Liberty pistols will be more effective than 20 million AR lowers. people think the Second revolution war will be like the first where both sides line off against each other.

No it will be fought in dark rooms, bars, back alleys.

And better yet the Liberty Pistol also has some form of a short suppressor as well, would not be hard at all with a subsonic .22. I can make one from a block of nylon, essentially a zip gun.


15 posted on 01/11/2013 8:26:20 AM PST by Eye of Unk (AR2 2013 is the American Revolution part 2 of 2013)
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To: Eye of Unk
people think the Second revolution war will be like the first where both sides line off against each other.

No it will be fought in dark rooms, bars, back alleys.

got to go where the rats, snakes and cockroaches are to get their attention

16 posted on 01/11/2013 8:41:49 AM PST by rolling_stone
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To: Eye of Unk

Make as many as you want for yourself, but the minute you transfer one to a friend, you become a firearms manufacturer subject to all their laws.


17 posted on 01/11/2013 8:44:02 AM PST by Blood of Tyrants (The only thing that Hollywood gets right about guns is that criminals will always get them.)
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To: Eye of Unk

The Liberty One-Shot Pen might also make a great project.


18 posted on 01/11/2013 8:44:55 AM PST by theBuckwheat
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To: marktwain

Although I think this is cool as heck, the AR/M16 is a relatively weak receiver design to begin with. The area where they are experiencing failures sometimes fails on aluminum receivers, too. They need to think outside the box and produce a new, stronger receiver design that will accept an AR upper, mag and fire control group.


19 posted on 01/11/2013 8:45:00 AM PST by jboot (This isn't your father's America. Stay safe and keep your powder dry.)
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To: Eye of Unk
Fer crying out loud I would think grade schoolers know how to work that problem. Print in an area that receives a stamped steel plate with just a rivet or something.

Often such a solution will just move the point of failure to a different location after a slightly longer time span.

20 posted on 01/11/2013 8:46:39 AM PST by thackney (life is fragile, handle with prayer)
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To: jboot

At the very least, greatly bolster the thickness of the web at the rear and upwards to the threaded area where the buffer tube attaches.

But I agree, a blank sheet design context might be in order. I have an old paperback edition of the Koran that I would donate as first prize.


21 posted on 01/11/2013 8:48:15 AM PST by theBuckwheat
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To: thackney

Obviously its the material, the durometer of the material is too low. 3D printing should advance at a blistering pace, I predict the cost will come down of those that can handle more robust materials or the advent of a type of material that can be chemically or thermally cured.


22 posted on 01/11/2013 8:51:02 AM PST by Eye of Unk (AR2 2013 is the American Revolution part 2 of 2013)
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To: marktwain

I read somewhere that Daimler Bentz has a prototype metal printer that uses laser cutters. They say it will print almost any metal. I’m sure it will cost a fortune though.


23 posted on 01/11/2013 8:51:30 AM PST by jimbobfoster
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To: theBuckwheat
Hehe or first target...

The buffer tube is the weak link, especially as they have chosen the carbine configuration. I think they should dispense with the threaded buffer tube socket and make a solid rifle stock integral to the receiver. Increase the side wall depth a few millimeters and the bottom depth 2 centimeters to increase strength and use a rifle buffer spring and rifle buffer to reduce loading. The only thing I can't visualize is how you would engineer the selector detent.

24 posted on 01/11/2013 8:57:42 AM PST by jboot (This isn't your father's America. Stay safe and keep your powder dry.)
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To: going hot
Liberty Pistol? OK , Sure , but if it becomes necessary this is all I will need .. and I can literally get one anywhere .. and it's completely untraceable.


25 posted on 01/11/2013 9:03:08 AM PST by Neidermeyer
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To: marktwain

How long before some lefty demands (and perhaps in some lefty jurisdictions, enacts) “3d Printer Control”?

I don’t object to such “control” in the narrow sense of saying “don’t make [things that are already illegal] with your 3D printer.” I’m talking, rather, about limits on having 3D printers AT ALL. It’s coming.


26 posted on 01/11/2013 9:05:55 AM PST by pogo101
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To: Neidermeyer

Yesterday someone on FR linked to an EBay listing of an “assault rock.” Satirical, of course, and very well written.


27 posted on 01/11/2013 9:08:19 AM PST by pogo101
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To: theBuckwheat

The Liberty One-Shot Pen might also make a great project.
********************************************
The 3/4” pipe and shotgun shell project doesn’t require a $5,000 3D printer.... can be created by anyone for about $2. I would like to see a single shot .22 or .25 pen though ,, stealth is VALUABLE.


28 posted on 01/11/2013 9:09:59 AM PST by Neidermeyer
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To: pogo101

EBay listing of an “assault rock.”
*************************************
Sharia Approved?


29 posted on 01/11/2013 9:11:43 AM PST by Neidermeyer
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To: marktwain

Wake me when they start printing M124s ...


30 posted on 01/11/2013 9:21:46 AM PST by PIF (They came for me and mine ... now it is your turn ...)
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To: marktwain

Meant M134s ...


31 posted on 01/11/2013 9:22:49 AM PST by PIF (They came for me and mine ... now it is your turn ...)
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To: Neidermeyer

Heh, the comments actually got into that. He pointed out how this rock was superior in geological composition to the paltry “sandstone” rocks used inthe Intifada.


32 posted on 01/11/2013 9:23:33 AM PST by pogo101
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To: marktwain

The lack of ammo is the Achille’s Heel of firearms. Tried to buy any lately? Those 3D printers will never safely replicate brass casings. Or primers. I shoot muzzleloaders and can cast lead balls and even make my own black powder, but I and most people don’t have access to the chemicals to manufacture primer compounds; that is dangerous as hell anyway. The best I can do is chip flints for my flintlock.


33 posted on 01/11/2013 9:24:12 AM PST by TexasRepublic (Socialism is the gospel of envy and the religion of thieves)
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To: Neidermeyer

I would love to have a what appears to be a cell phone but has a working firing mechanics for at least a single shot .22lr.

Could be easy enough making a snap on printed extended battery pack with the guts in it, I have one for my Samsung Galaxy 2.


34 posted on 01/11/2013 9:27:36 AM PST by Eye of Unk (AR2 2013 is the American Revolution part 2 of 2013)
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To: Eye of Unk
The shelves are bare right now, all Obama has to do is to shut down the ammo shipping. Smart people will not waste ammo at the range.

A friend was telling me this morning that Thursdays are now being called "Black Friday Thursdays" at our local Sportsman's Warehouse (Albuquirky). He was there yesterday afternoon, just checking things out.

The truck comes in Thursday morning. The store doesn't even open until around 9 AM, but reports are that folks are lining up a 3 AM just to get their hands on anything useful (mags, ammo, ARs - no guarantee they're even on the truck).

They were getting 1,000 round boxes of Federal .223 loose in the box, and apparently yesterday they sold all 50 boxes they received that morning ($406 each - including taxes) - they aren't even stocking the ammo on the shelves, just putting it out in shopping carts - it doesn't last long enough on the shelves to stock them.

Nothing of note left on the shelves, some obscure hunting rounds, but no .22LR, 9mm, .38, .45, 40S&W, .357, or .44 magnum, .30-30, .308 - gone. All semi-autos (rilfes/shotguns/handguns) sold out. Only firearms left were some bolt-actions, pump shotguns and a few revolvers. Even the reloading shelves are emptying out.

35 posted on 01/11/2013 9:33:43 AM PST by IYAS9YAS (Rose, there's a Messerschmitt in the kitchen. Clean it up, will ya?)
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To: marktwain

There is a thread on AR-15.com of someone making receivers from a $1600 makerbot printer. I think he beefed it up some at the typical failure points. The raw product looked rough, but was functional for more than 6 rounds.


36 posted on 01/11/2013 10:17:09 AM PST by Chipper (You can't kill an Obamazombie by destroying the brain...they didn't have one to begin with.)
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To: Eye of Unk
I predict the cost will come down of those that can handle more robust materials or the advent of a type of material that can be chemically or thermally cured.

There is a 3D print company in Sweden that uses electron beams instead of lasers, and can create items using titanium.

I think the bigger concern will be patent violations. Was the AR creation based on another company's design?

37 posted on 01/11/2013 10:24:16 AM PST by aimhigh ( Guns do not kill people. Planned Parenthood kills people.)
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To: Eye of Unk

I think you are right on all accounts.

Rather than a patch at a point, the design/material needs to be tweaked/redone to reach durability without adding labor and specialized pieces.


38 posted on 01/11/2013 10:29:52 AM PST by thackney (life is fragile, handle with prayer)
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To: Eye of Unk
. Frankly I’m surprised Obama hasn’t made any effort to attack the ownership and usage of 3D printers to make mags.

That will come. Or possession of a 3D printer will be prima facie justification for a SWAT raid.

39 posted on 01/11/2013 10:35:28 AM PST by arthurus (Read Hazlitt's Economics In One Lesson ONLINE www.fee.org/library/books/economics-in-one-lesson)
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To: TexasRepublic
The lack of ammo is the Achille’s Heel of firearms.

Give them a bit of time and perhaps the caseless ammo propellant can be 3D printed.

40 posted on 01/11/2013 10:38:04 AM PST by thackney (life is fragile, handle with prayer)
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To: thackney

“Give them a bit of time and perhaps the caseless ammo propellant can be 3D printed.”

Don’t hold your breath, caseless ammo has been a dream for many years. I am sure that fortunes have been spent in military research around the world for the obvious reasons should they succeed. At one time there was a serious effort by Germany to develop the technology. Something must be wrong with it besides expense or else our military would already have it at the very least in some units. It could be the ammo is too fragile to carry in combat or perhaps there are problems with gas leakage. That’s nothing new either — ever see a paper-Sharps or a Hall breach-loading rifle?


41 posted on 01/11/2013 11:05:43 AM PST by TexasRepublic (Socialism is the gospel of envy and the religion of thieves)
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To: jimbobfoster

“I’m sure it will cost a fortune though.”

http://www.shapeways.com/

“Shapeways is a 3D Printing marketplace and community.”


42 posted on 01/11/2013 11:41:34 AM PST by BwanaNdege ("To learn who rules over you simply find out who you are not allowed to criticize"- Voltaire)
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To: pogo101
Satirical, of course, and very well written.

Satire or not, the last time I looked bids were pushing $300!!!

43 posted on 01/11/2013 12:29:40 PM PST by houeto (https://secure.freerepublic.com/donate/)
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To: marktwain

Thanks for the update mark. I was wondering how long it would take for the improvement. Turns out, not long at all!


44 posted on 01/11/2013 12:39:21 PM PST by houeto (https://secure.freerepublic.com/donate/)
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To: Eye of Unk
I am very enthusiastic about the 3D process, to the point I may sell one of my gun safe queens to buy an entry level printer, as a machinist and fabrictor who has worked in a fiberglass putrusion and plastic extrusion plant as a die maker I can see ways to change the application.

Damn, Unk. Why can't you talk like that all the time? That sounds a lot more like the old Unk to me. I don't know who that new guy is who's posting under your nick.

45 posted on 01/11/2013 12:57:06 PM PST by Windflier (To anger a conservative, tell him a lie. To anger a liberal, tell him the truth.)
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To: Windflier

You got me there, maybe their is a fake unk.
I am mobile out in the field, i saw your comments thst were somewhat hested. When i get back to base and on the puter l will see what the issue is.


46 posted on 01/11/2013 4:20:19 PM PST by Eye of Unk (AR2 2013 is the American Revolution part 2 of 2013)
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To: pogo101
How long before some lefty demands (and perhaps in some lefty jurisdictions, enacts) “3d Printer Control”?

I don’t object to such “control” in the narrow sense of saying “don’t make [things that are already illegal] with your 3D printer.” I’m talking, rather, about limits on having 3D printers AT ALL. It’s coming.


I'm sure the labor unions would be all for it.why deal with the teamsters, the ILA, the UAW, et al, when anything you wish can be produced at home. I am not forgetting about the 'ink'. this could either produced locally, or someone might invent a device that breaks down a printed object into its component powders.
47 posted on 01/12/2013 10:03:00 AM PST by jmcenanly ("The more corrupt the state, the more laws." Tacitus, Publius Cornelius)
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