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I've always read that J-B weld shouldn't be used to in place of "real" welding when building an AK, but it seems that J-B would be strong enough. I'm not crazy enough to try it, but I'd like to know why exactly.
 

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JB weld melts when it heats up after about 40-60 rounds of rapid fire. It will harden up again after it cools but your AK will be in pieces all over the ground.
 

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I've seen JB weld not work in good conditions and fail in good conditions.

It might be a good emergency fix in some cases, but I wouldn't trust it for anything.
 

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I have used JB Weld to make repairs to US Naval steam system components. This is an authorized material and it worked great. But it was always used to fill voids and cracks as seen in flat gasket surfaces, never as an adhesive to join two pieces together. It was never used whenever there was extreme stress placed directly on the JB Weld. If you used it to put an AK together, I doubt you would get 100 rounds through it before have a disassembled kit on you hands.
 

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1. The top rails are not under 'extreme stress' , the are subject to abrasive wear do to the carrier riding on them.I am willing to bet the Laser Cut Flats with just the bent tabs and no JB weld would last over 100rds.

2.The JB weld would be more of a filler than an adhesive.

3. The middle of the LCF would bear the brunt of the stress (extreme stresses??) and it would be solidly riveted/screwed/welded into the front and rear trunions.

4. The bottom of the LCF would , I think bear the brunt of the stress and if it is clamped (which it is between the rear stock and front hand guard) and JB welded , I think it would stay put reasonably well.

Granted this would not be the preferred way of assembling a receiver , but I DO think that it would work and that the assembled rifle would stay together for much more than 100 rds.
 

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Taking your life in your own hands if you try that. I'v welded receivers by mig welding, only to see them fail. If mig can't handle the stress, JB sure as hell can't. The manufacturer of the lazer cut flats recommends only TIG welding.
OJF
 

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ANYBODY using JB weld on the upper rails of a laser-cut flat to 'fasten them' has a death wish. I've always MIG'd mine....
 

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oldjarheadfart said:
Taking your life in your own hands if you try that. I'v welded receivers by mig welding, only to see them fail. If mig can't handle the stress, JB sure as hell can't. The manufacturer of the lazer cut flats recommends only TIG welding.
OJF

I would not use JB on anything that could possibly blow up in your face!
 

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Cephus said:
I don't know guys I been thinking about taking some aluminum foil in layers with jb weld holding them together I think 8 or 10 layers will work what do you think and if it works The 50 is next Anybody want to go in business huh huh huh Put me in coach even if I aint got no head gear.

JUST KIDDING nobody take this serious Ok
Cephus, This is just to funny. (huh huh huh Put me in coach even if I aint got no head gear.)
:lolup: :lol: :rofl: :lol: :funny_pos :funny_pos
 

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i followed the recomendation of people j b welding a slant brake on, i tried it, and did it right!!!! the brake came off after about 50 rnds. it is not worth the risk in my opinion
 

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40-60 rounds I think is what I said. You cant let JB get hot. Itll melt to just the way it was when you first made it up. A guy I know tried to fix a cracked exhaust manifold with the stuff. 15 seconds tops and it was blown. There is just too many extreme forces going on in a rifle such as an AK for "glue" to hold it together. Heat, expansion-contraction, oils and solvents, recoil, shock in the action etc. JB is good for alot of stuff. I always keep it in the shop. But guns and JB should not be spoken in the same sentence.
 

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oh,go ahead

use it.it won't work,but it will give you some really interesting scars that you can make up old war stories about. prophet
 
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