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Posted: 4/30/2004 12:24:31 PM EST
I just got my centerfire systems amd-65 kits in, waiting on my us compliance parts from TAPCO, BUT I was wondering if anyone here has gone and welded their AK together? and if so, what things to look out for? I'm referring to the trunnions and trigger guard, I will be using a vulcan reciever and am pretty handy with a MIG welder. I've seen pics of them and they look nice when welded and ground flat. ideas?
Link Posted: 4/30/2004 1:46:37 PM EST
Link Posted: 4/30/2004 2:31:18 PM EST
good deal, and did they just weld some puddles where the rivets went, or did they do more? I'm leaning towards doing 3 or 4 spots per side on the front trunnion just for the cya factor.
Link Posted: 4/30/2004 3:27:46 PM EST
[Last Edit: 4/30/2004 3:28:42 PM EST by Andreuha]
Hesse/Vulcan puddle weld where the rivets go and nothing else... You can tell their rifles suck, too.
I did see one AK74 on a Hesse receiver at my local gunshop which was smooth and showed no visible welds. Probably not built by hesse or vulcan.

There's nothing wrong with welding, though. It's just very quick and easy to do, and virtually no room left to screw up.
Link Posted: 4/30/2004 4:07:35 PM EST
I ground my front trunion so I could get a clean bead on the trunion sides and the receiver. The trunion holes were also welded "in" and the beads were ground smooth. Same with the rear. I've had no problems with over 10k rounds in a shooter.l
Link Posted: 5/1/2004 2:48:44 AM EST
Link Posted: 5/1/2004 6:40:18 AM EST
I welded my first AMD65. Actually the machine shop welded it, by MIG welding, and the welds broke after 25-30 rds. Then took it to a friend who TIG welded it, and the welds are still holding after 1,000 rds. I opened up the trunnion holes on the shell to get better bite of the weld. It is the fastest way to get out on the range.

OJF
Link Posted: 5/1/2004 7:59:20 AM EST
You need to make sure the receiver is being welded to the trunion. I have found that you need to make sure that you aren't just welding to the old rivets. The weld doesn't like to stick to the rivets, probably due to the metal it is made from. If your welds only bite onto the rivets, more then likely the weld will pop loose.
Link Posted: 5/9/2004 6:13:24 AM EST
Since I have the rivets completely gone on my polish kit can I back the holes with copper to avoid spatter and such inside the trunion and fill the rivet holes up and out to the receiver sheetmetal ? or should I fill the holes up beforehand some how prior to welding the receiver/trunion together ?
Link Posted: 5/9/2004 8:06:57 AM EST
If HESSIE welded them together you know it can't be a good way to build one.
If you can't or don't want to rivit it together, then screw it together.
Link Posted: 5/9/2004 5:49:44 PM EST
They were meant to be riveted...... to me that means there is no other alternative. You might get lucky with the welds but I sure wouldn't want it near my face when it fails....
Link Posted: 5/10/2004 4:43:35 AM EST
My 63 build is welded, but I did not do it. Trust the guy who did and it runs fine for several hundred rounds. Takes more skill than rivits, but if welding equip is what you have...
Link Posted: 5/13/2004 1:09:44 PM EST
Riveting is usually done b/c it allows for faster/more automated assembly for large quantities of rifles, just like using stamped receivers instead of milled ones. It's not necessarily better. Riveting does allow a little more "flex" in the receiver when it gets hot from sustained fire. Welding is rigid and doesn't allow some of the "flex" you get from rivets. If you have the time and talent to do a good weld job, it does give a much cleaner look than riveting everything together.
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