Hello,
I am getting ready to weld my cowl back together. Once it is welded, access to the weld seams will be severely limited, although I do plan on trying to brush some seam filler at the seams that I can reach.
Since there is limited access after the panel is welded in, I decided to try some weld thru primer because I do not want to ever have to remove this panel ever again.
I have not had good luck with welding through zinc in the past.
I noticed many recommendations for the Upol copper based weld through primer, better conductivity for better welds.
But I also read that copper is a bad idea as it will set up galvanic corrosion.
The last thing I want to do is to assemble this with a product that will cause corrosion. Again I do plan on seam sealing afterwards but may not be able to reach every part of the seams.
I know epoxy primer is also a good choice, but unless it is sold in spray cans, I am not set up to mix and shoot paint.
I have already sprayed the copper stuff on, I can remove it if need be. I also have a can of zinc weld thru here.
Would I be better off leaving the copper at the plug weld locations, and spraying the zinc in between? That way it will weld better but still provide some protection?
The car will not be driven in the winter, is the copper primer going to cause corrosion? Is it not enough corrosion to worry about?
Thanks for any advice
I need to get this car back together, as it has been sitting for 2 months and I am running out of enthusiasm for the project.
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