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Old 09-13-2013, 11:04 PM
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Ground Clamp on welder makeover?

I have a Lincoln pro 180 220 volt welder. I had problems welding with it and determined the problem was that serrated copper strap in the ground clamp. I repositioned it and it works for now but doesn't look like it will last.

Is there any reason I can not replace that by taking a 1/2 inch copper pipe, crush it flat in a vise, grind off each side, which would give me two flat pieces of copper, take one of the flat pieces of copper and install it in place of the old serrated copper strap that keeps working loose?

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Old 09-14-2013, 12:27 AM
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None that I can think of..Sometimes we even bolt the ground lead to whatever we are welding..I have seen a C-clamp used as a ground clamp as well..

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Old 09-14-2013, 03:43 AM
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If it was me I would just throw away that ground clamp and spend 20-30$ and get a good tweco replacement.
$22
Amazon.com: SEPTLS35892051320 - Tweco Ground Clamps: Home Improvement Amazon.com: SEPTLS35892051320 - Tweco Ground Clamps: Home Improvement

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Tweco Ground Clamps Model Code: AA (part# 9205-1120) - Amazon.com Tweco Ground Clamps Model Code: AA (part# 9205-1120) - Amazon.com
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Old 09-14-2013, 09:32 AM
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grounding

I ve used copper pipe pieces for fillers. I have a fine wire wheel that I clean- buff parts with first, a little bit of invisible corrosion caused all kinds of problems with my old Tig welder. On welding tips and tricks.com Jody shows using a 1 ft long piece of bare stranded old ground cable as an extra ground, HE sometimes wraps it around the part and says he doesn't get the ground burn spot on the part. and says a lot of Mig problems can be caused by inadequate ground. I tried one of those HF magnetic grounds, it only worked for a while. It probably needs to be taken apart and cleaned,
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Old 09-14-2013, 09:55 AM
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Rebuilt old ground clamp

I went to the local welding supply and tried that Tweko ground clamp and the spring was so strong I could hardly squeeze it. I have arthritis in my hands so I wanted to rebuild my old one. I have installed the new copper strap and it works good, and I don't have to worry about it working loose.
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Old 09-16-2013, 12:17 PM
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I also had trouble with squeezing my ground easily, so I went another route. I welded a tab on an old pair of vise grips and bolted the ground cable to the vise grips. I can adjust the jaws for various thickness metal, and once clamped it stays put. Easy to release, and on small parts I can use the vise grip clamp to hold the part as I weld it too.
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