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Breaking spot welds?

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Old Jan 11, 2005 | 10:51 PM
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Wicked 3800 V6's Avatar
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Default Breaking spot welds?
For a bit of weight reduction I'm in the proces of removing some of the excess brackets / mounts that I'm not using anymore, i.e. where heat shields and seatbelts used to be. My problem is that I don't have a good method for breaking and removing the spot welds.

For example, I removed one small two-weld bracket from underneath the car using a hammer, chisel, and prybar. One spot weld broke and stayed on the car, the other broke and ripped a small hole clear through to the carpet. Not exactly what I wanted, and now I get to play "patch".

So how would you guys do it? Hammer + Chisel? Prybar? Dremel? Angle grinder? Forget about it entirely?
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Old Jan 11, 2005 | 10:59 PM
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Air hammer works best and a angle grinder or cut off wheel. Grind the weld a little then air hammer away. They come right off.
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Old Jan 12, 2005 | 10:01 AM
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There are spot weld cutters, which are just a special type of drill bit. Eastwood (a sponsor) carries them.
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Old Jan 12, 2005 | 10:03 AM
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I'd like a method that doesn't leave a hole in the panel beneath the bracket. Would the cutter do that?
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Old Jan 12, 2005 | 10:08 AM
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Yay google. http://www.europeancarweb.com/auto_tools/0206ec_tool/
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Old Jan 12, 2005 | 10:11 AM
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Yes the cutter is a small drill bit with a cutter at the top that eats the top of the weld! Go with the air hammer! My friends own a boady shop so for realy cheap we blasted them of. Takes only like 1-2 minutes.

I am sure a local body shop would remove them for real cheap. Or any good fab/roll cage shop has these tools.
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Old Jan 12, 2005 | 10:19 AM
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Or you can get them at Walmart for around 25-30 bucks. An air Chisle works wonders
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Old Jan 12, 2005 | 11:05 AM
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I used a cut-off wheel. I went through 4 packs to cut everything off, but I had a nice little pile of scrap metal when it was all said and done.
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Old Jan 12, 2005 | 11:14 AM
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why not just do it with nitrous? it worked to blow off the welds on the floorpan in F&F!
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Old Jan 12, 2005 | 12:37 PM
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air hammer, angle grinder, cutoff wheel...it's very simple. just take your time and you won't have any issues.
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