I use a mig. I'm a rookie but I liked the copper rich weld thru primer. the term "weld thru" is a misnomer though. I drilled and plug welded everywhere I used it like mentioned above. worked great i thought.
its the only way to rust proof between flanges and such, i liked having it there. I seeped por15 into most all areas when done welding to boot.
oddly, this copper rich weld thru stuff has a very pleasant smell.
Last edited by JUDGE3; 12-20-2023 at 10:56 AM.
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