jimdigriz 580 Posted November 11, 2009 Report Share Posted November 11, 2009 I'm working on my second conversion. I've removed all the trigger parts, and two of the trigger plate rivets. But I can't get through the spot weld. I've managed to drill a little dent into it, but I can't get any further. I recharged the drill and even bought new drill bits, thinking I had worn out the ones I had been using, but no dice. This was easy last time. Any thoughts about what I need to do to get it to work this time? Should I attack it from the other side? Thanks. Jim Quote Link to post Share on other sites
madmax4x4 68 Posted November 11, 2009 Report Share Posted November 11, 2009 you could grid in to the weld with the right dremel bit like the cone shape one, if you have a dremel. Quote Link to post Share on other sites
mav 459 Posted November 11, 2009 Report Share Posted November 11, 2009 I just drove a chisel between the receiver and trigger plate and the popped loose, then used dremel to grind down what was left on the receiver. Quote Link to post Share on other sites
seanie 6 Posted November 11, 2009 Report Share Posted November 11, 2009 I also used a dremel. The spot weld on mine really didn't want to budge. I could barely mark it with my tap. Quote Link to post Share on other sites
jimdigriz 580 Posted November 11, 2009 Author Report Share Posted November 11, 2009 Thanks guys. I'll try the dremel method first, and then the chisel, if necessary. Quote Link to post Share on other sites
Coal_forge 15 Posted November 11, 2009 Report Share Posted November 11, 2009 Start with a smaller drill bit and work your way up. If you can use a drill press and have it on a low spindle speed. Quote Link to post Share on other sites
chevymann 13 Posted November 11, 2009 Report Share Posted November 11, 2009 cold chisel is the easiest.. I've also used center drills. Those spot welds are tough! Quote Link to post Share on other sites
Flashbang 34 Posted November 11, 2009 Report Share Posted November 11, 2009 Are you using cobalt drill bits? Quote Link to post Share on other sites
jimdigriz 580 Posted November 11, 2009 Author Report Share Posted November 11, 2009 Are you using cobalt drill bits? Yes. They worked for the spot weld on the 7.62x39, but not on this one for some reason. I have been trying smaller bits first, but no luck with them. Quote Link to post Share on other sites
Flashbang 34 Posted November 11, 2009 Report Share Posted November 11, 2009 Are you using cobalt drill bits? Yes. They worked for the spot weld on the 7.62x39, but not on this one for some reason. I have been trying smaller bits first, but no luck with them. Wow...I guess the chisel is the way to go. Quote Link to post Share on other sites
chevymann 13 Posted November 11, 2009 Report Share Posted November 11, 2009 If you are recycling the trigger guard, it has been my experience that the cold chisel leaves the trigger guard in better shape than using drill bits. Just have to smooth (dremel) the spots on the bottom of the receiver. Quote Link to post Share on other sites
jimdigriz 580 Posted November 11, 2009 Author Report Share Posted November 11, 2009 If you are recycling the trigger guard, it has been my experience that the cold chisel leaves the trigger guard in better shape than using drill bits. Just have to smooth (dremel) the spots on the bottom of the receiver. At Nalioth's recommendation, I bought a small cold chisel set last month, but have yet to find any use for them. If the blade was not so thick, they would be very useful indeed. Perhaps I just got the wrong ones. Quote Link to post Share on other sites
chevymann 13 Posted November 11, 2009 Report Share Posted November 11, 2009 Most cold chisels are fairly thick to take the abuse. Just set it at the back of the rivet and give it a couple of shots with a decent ball pein. You may have to straighten the flats on the trigger guard a little once it comes off, but on my last one it popped right off after only a few taps. Quote Link to post Share on other sites
jimdigriz 580 Posted November 12, 2009 Author Report Share Posted November 12, 2009 Well, after trying the drill again, the dremel, and the cold chisel, all with no significant progress, I finally gave up and bent it back in order to drill out the last trigger plate rivet. Thankfully, I can shell out less than $30 to Carolina Shooters Supply for a nice new trigger guard. Jim Quote Link to post Share on other sites
JK-47 33 Posted November 12, 2009 Report Share Posted November 12, 2009 My 5.45 had extremely hard spot welds also. I think I got through with a really small bit and drill press- 3/32" or so, and worked my way up. Quote Link to post Share on other sites
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