AK reciever bending jig? - Pirate4x4.Com : 4x4 and Off-Road Forum
 
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Old 07-27-2007, 09:04 PM   #1 (permalink)
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AK reciever bending jig?

I`m going to buy one. I like the model DPH builds and it`s reasonable at $150. Has anyone seen any others worth considering? I`d like to spend no more than $200.
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Old 07-27-2007, 09:14 PM   #2 (permalink)
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I've got a DPH, it works fine. Upper rails are a bit of an art since you hammer them over instead of having a dedicated jig, but you get used to it.
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Old 07-27-2007, 09:20 PM   #3 (permalink)
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How did you heat treat?
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Old 07-27-2007, 09:43 PM   #4 (permalink)
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At first using a MAPP gas plumbers torch and quenching them in the sink of my apartment. Now I use a home depot 5 gallon bucket and an oxy/acet torch.
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Old 07-28-2007, 09:00 AM   #5 (permalink)
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Do you just have to bend the reciever flats, or is there other drilling and stuff you have to do before you have a complete reciever?
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Old 07-28-2007, 09:07 AM   #6 (permalink)
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They are a pain, at least the Tapco ones are, the AKBuilder ones are probably a lot better.

1. Make the bottom bend in the jig
2. flip the die over in the jig, use a hammer to get the bottom of the receiver fairly flat and sharpen up the bends.
3. Flip it again, hammer the upper rails over, hammer them some more, then use a piece of scrap steel to smooth them out.
4. weld the lower rails in.
5. install center support and rivet
6. adjust the holes to fit the kit
7. heat treat the receiver and ejector
8. rivet the receiver to the kit
9. use paint, marker, or dye to mark the rails and figure out where it's binding up the bolt and carrier, use files or a rotary tool to remedy this.

Then you have a receiver. It's nowhere near as easy as a good premade receiver.
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Old 07-28-2007, 09:15 AM   #7 (permalink)
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Damn, that's a lot of work. It is attractive though that you can have a flat shipped right to your door and not have to dick around with FFL's.
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Old 07-28-2007, 04:04 PM   #8 (permalink)
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I`m going to buy one. I like the model DPH builds and it`s reasonable at $150. Has anyone seen any others worth considering? I`d like to spend no more than $200.
You could look at the Poor Man's Jig on Gunco.net. Couple of pieces of angle iron and some bolts. Most everyone that's used it says it works. YMMV. I've also seen it posted on AKforum and AR15.com in the BIY forums.
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Old 07-28-2007, 05:02 PM   #9 (permalink)
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How did you heat treat?
heat with a oxy torch till a magnet will not stick and then quench in a metal "mud pan/wall paper glue pan" filled with used motor oil.

Then I stick it in a pan and burry/fill it with clean sand and bake at 350* for an hour and turn off the oven till cool to anneal it.
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Old 07-28-2007, 05:12 PM   #10 (permalink)
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I made my own jig. Details are in the AK DIY thread. Basically a piece of 2/3"x2"x12". two 1/4"x2"x12". Used the blueprints found online and a sawzall to cut to shape. Finished with a long flat file and a belt sander. The female part of the jig is some 1/4x2x2 angle welded together.
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Old 07-28-2007, 05:30 PM   #11 (permalink)
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Just got back from the gunshow. I thought I might find an AK reciever fairly cheap, I was wrong. They started at $110 and went up. The DPH jig I wanted isn`t available now for some reason, according to their website.
I don`t know what to do now.
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Old 07-30-2007, 11:07 AM   #12 (permalink)
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I don`t know what to do now.
duh, make your own like plenty of others have mentioned on the site. plans are out there.
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Old 08-02-2007, 11:21 AM   #13 (permalink)
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heat with a oxy torch till a magnet will not stick and then quench in a metal "mud pan/wall paper glue pan" filled with used motor oil.

Then I stick it in a pan and burry/fill it with clean sand and bake at 350* for an hour and turn off the oven till cool to anneal it.
Oh man! That's the most fun I've had all Summer!

Sad, I know, but I really enjoyed filling the garage with smoke for a little while there.

SWMBO couldn't figure out why I smelled like exhaust when nothing had been running
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