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[NBC] 3-D printed gun fires 6 shots — then falls apart - Page 31

post #301 of 440
Quote:
Originally Posted by Vagrant Storm View Post

There is a big difference though...unless you are buying automated machining equipment you can't just go out and buy them and start making guns. It takes along time to learn the skills to use them.
You can go out and buy a 3D printer, set it up, load a design you got online, and press "Print". No skills needed. Even if it cost more to do I can see people going that route just because it would easier to do. Though, the cost of 3D printers are getting reasonable. For about $1500 you can get a decent one...for $500 you can get a not so nice one, but even that might do the job. I don't know if I'd pay less than $5000 for one that I was going to making gun parts with though, but thought is something I'd have to research.

You must have missed the part where they had to hand fit some of the parts. A 3D printer is accurate but that accurate. We are talking about thousandths of inch here. Yes, even with the 80% lowers you do have to do little hand fitting. You didn't make the lower on a $100,000 cnc machining center.
Edited by m98custom1212 - 12/6/12 at 1:56pm
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post #302 of 440
I can walk up to you with a sharpened pencil and have you dead in less than 1 second, silently and without leaving evidence.

The rate of muggings and home and business robberies (less sensationalized than school shootings but orders of magnitude more common) drastically decreased here in the good old state of Ohio when they introduced concealed carry licenses. In rural and urban areas.

The government is corrupt and cannot be trusted with my safety.

3D printers could potentially empower otherwise underfunded individuals to innovate.

/thread
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post #303 of 440
Quote:
Originally Posted by mott555 View Post

At this point I think Masked is just some "know-it-all" who gets all his gun information from playing Call of Duty and watching CSI. Or a troll, in which case I'd rank him 8/10.

+1 its called a "Walter Mitty"
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post #304 of 440
Quote:
Originally Posted by Masked View Post

I don't think anyone (I know I'm not) is saying it's ACTUALLY that simple.
My point is and has been from the begging that 80%+ of a rifle can be made of plastic.
This is proven by the current polymer rifles in existence and truth be told, they're only a few levels of hardness above this one.
Is that 80% mass producible by a 3D printer? Absolutely. Easily/readily available? Absolutely.
Someone with the knowledge could even make the ammunition necessary with half the operating pressure.
The parts of a rifle that cannot be made of plastic are:
upper reciever
action
barrel
trigger mechanism
springs
sights (if they are going to be at all durable)

That's not exactly <20%
post #305 of 440
Quote:
Originally Posted by un-midas touch View Post

The rate of muggings and home and business robberies (less sensationalized than school shootings but orders of magnitude more common) drastically decreased here in the good old state of Ohio when they introduced concealed carry licenses. In rural and urban areas.

proof.gif
post #306 of 440
Quote:
Originally Posted by un-midas touch View Post

I can walk up to you with a sharpened pencil and have you dead in less than 1 second, silently and without leaving evidence.
The rate of muggings and home and business robberies (less sensationalized than school shootings but orders of magnitude more common) drastically decreased here in the good old state of Ohio when they introduced concealed carry licenses. In rural and urban areas.
The government is corrupt and cannot be trusted with my safety.
3D printers could potentially empower otherwise underfunded individuals to innovate.
/thread
I'd need proof to believe the thing about the decrease in crime, but I do agree that the government and police are not very trustworthy.
post #307 of 440
Quote:
Originally Posted by perfectblade View Post

proof.gif

Might want to go to the public library and check out this book. It gives a total breakdown of statistics of various cities and states on just this topic.

More Guns, Less Crime: Understanding Crime and Gun Control Laws (Studies in Law and Economics)
Quote:
Does allowing people to own or carry guns deter violent crime? Or does it simply cause more citizens to harm each other? Directly challenging common perceptions about gun control, legal scholar John Lott presents the most rigorously comprehensive data analysis ever done on crime statistics and right-to-carry laws. This timely and provocative work comes to the startling conclusion: more guns mean less crime. In this paperback edition, Lott has expanded the research through 1996, incorporating new data available from states that passed right-to-carry and other gun laws since the book's publication as well as new city-level statistics.

"Lott's pro-gun argument has to be examined on the merits, and its chief merit is lots of data. . . . If you still disagree with Lott, at least you will know what will be required to rebut a case that looks pretty near bulletproof."--Peter Coy, Business Week

"By providing strong empirical evidence that yet another liberal policy is a cause of the very evil it purports to cure, he has permanently changed the terms of debate on gun control. . . . Lott's book could hardly be more timely. . . . A model of the meticulous application of economics and statistics to law and policy."--John O. McGinnis, National Review

"His empirical analysis sets a standard that will be difficult to match. . . . This has got to be the most extensive empirical study of crime deterrence that has been done to date."--Public Choice

"For anyone with an open mind on either side of this subject this book will provide a thorough grounding. It is also likely to be the standard reference on the subject for years to come."--Stan Liebowitz, Dallas Morning News

"A compelling book with enough hard evidence that even politicians may have to stop and pay attention. More Guns, Less Crime is an exhaustive analysis of the effect of gun possession on crime rates."--James Bovard, Wall Street Journal

"John Lott documents how far 'politically correct' vested interests are willing to go to denigrate anyone who dares disagree with them. Lott has done us all a service by his thorough, thoughtful, scholarly approach to a highly controversial issue."--Milton Friedman
post #308 of 440
Quote:
Originally Posted by Masked View Post

LaRue/DPMS etc...Everyone is actually quoting a year wait, uppers/lowers are impossible to find right now and if you can find them, the prices are astronomical.
That being said, I just finished a custom .308 with an XLR stock, McGowan barrel on a custom Savage SA.
My next project, fortunately, I have the lower/upper right now, is a KA .308 AR-10 with a Krieger barrel, KA internals, Gisselle trigger and a Magpul PRS...I'm waiting on the barrel to finish the rest, is due in Feb/March.
You also don't NEED an upper at all...The only part you really NEED to be metal is the bolt head/barrel...And that's for precision purposes...Realistically, you could use ceramic for the barrel, could arguably even use a stronger resin/polymer but, that's not here nor there.
Beyond that, you could actually, theoretically print enough of the lower that it would be functional...Spring tension is possible...The only part in question, in regards to not printing, as I said earlier is the bolt/barrel assembly...and that really depends on the rounds being used.

I bought my upper from PSA on Labor Day, the Stripped Lower on the night of the Presidential Debate (2nd, whichever the one that mentioned the AWB), and the rest on Black Friday.

Glad I bought the upper and lower when I did.
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post #309 of 440
Quote:
Originally Posted by Art Vanelay View Post

The parts of a rifle that cannot be made of plastic are:
upper reciever
action
barrel
trigger mechanism
springs
sights (if they are going to be at all durable)
That's not exactly <20%

Incorrect. rolleyes.gif

Read previous statements.

Several companies already make completed AR15's in a polymer/resin where the only active metal parts are the firing ping/barrel/barrel nut and the buffer spring...80%.
post #310 of 440
Quote:
Originally Posted by Masked View Post

Incorrect. rolleyes.gif
Read previous statements.
Several companies already make completed AR15's in a polymer/resin where the only active metal parts are the firing ping/barrel/barrel nut and the buffer spring...80%.

Agreed ... the metal parts are about 80% of the gun ... not 80% of the gun is plastic. But more to the point, the plastic they use isn't the same light weight stuff that is in 3D Printers ... it is MUCH tougher and a 3D Printer would choke on it.
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