Full derlin AR lower with pics

Full derlin AR lower with pics

Renegade_Azzy
Renegade_Azzy

February 16th, 2012, 5:33 pm #1

http://www.pagunblog.com/2012/02/15/how ... om-delrin/

If you look through the comments, he provides the source files, and thoughts on making it beefier to be able to fire .223
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Timberwolf
Timberwolf

February 16th, 2012, 8:20 pm #2

Now who can we get to 90% a batch of these?
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Renegade_Azzy
Renegade_Azzy

February 16th, 2012, 9:37 pm #3

You mean 80%. At least that was my last understanding, that it should not be any more than 80% of the work completed to be able to not call it a firearm.
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Tenacious221
Tenacious221

February 16th, 2012, 9:39 pm #4

http://www.pagunblog.com/2012/02/15/how ... om-delrin/

If you look through the comments, he provides the source files, and thoughts on making it beefier to be able to fire .223
Try printing this out and see how it holds up.

http://www.thingiverse.com/thing:11770

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-Tenacious
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Tenacious221
Tenacious221

February 16th, 2012, 9:41 pm #5

Its going to be on an extrusion 3d printer (like a complicated hot glue gun, but with ABS plastic)

Made out of the same plastic legos are (ABS) and the author of the file claims to have reinforced it in places...but I plan on just beefing it as much as possible just so I don't have to worry about things breaking so easily. (if the original design doesn't hold up that is.

-Tenacious
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Renegade_Azzy
Renegade_Azzy

February 16th, 2012, 10:22 pm #6

Please post in that thread that i posted, so we can see how multiple takes turn out from different machines. They have used a makerbot to make a magazine already, i would love to see a lower done.

Keep safe too.
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J.Cook
J.Cook

February 16th, 2012, 11:45 pm #7

You mean 80%. At least that was my last understanding, that it should not be any more than 80% of the work completed to be able to not call it a firearm.
Otherwise You'll spend time in Club Fed.

I seem to recall that a couple places got in trouble for holding parties where they had made up a bunch of 80% blanks in advance, and people come in to push the button on the CNC machine to do the last 20%. The Jackbooted thugs didn't take kindly to that.

TBH, If I'm going to make a firearm, I'll stay the strictly legal route, regardless of how odorous it might be- my employers don't take kindly to that sort of trouble, either.
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Derek
Derek

February 17th, 2012, 12:38 am #8

Now who can we get to 90% a batch of these?
I have access to various mills, and would love this project.
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Someone
Someone

February 17th, 2012, 1:14 am #9

http://www.pagunblog.com/2012/02/15/how ... om-delrin/

If you look through the comments, he provides the source files, and thoughts on making it beefier to be able to fire .223
Machine enough of the outside to have good holding and reference spaces.
Then machine the inside
Finally, go back and finish machining the outside.

Some places, like the buffer tube threads, look like it would be easier to machine in a solid block, then cut away everything that isn't part of the threaded projection.

Then again, I'm not a CNC machinist.
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Le_KiD_Qc
Le_KiD_Qc

February 17th, 2012, 1:14 am #10

I have access to various mills, and would love this project.
I think Inventor is able to open STL files.

I will check tomorrow at the shop, but is Solid-Works is able, Inventor should do the same.

Le_KiD_Qc
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