U-POLU-Pol Products Weld 2 Copper Primer, Aer.

Well not too much to say here.. I bought what I wanted got quick shipping. I have used Upol products before and they are just what you need for that project. Now what exactly is that project you are working on? Upol weld thru copper rich primer is just that! If you must ask, well you probably don't need it then. Would I purchase from them again? Yes, yes indeed I would..... Good luck with your next project!

prevent rust when mig welding panels together

I bought a can of this item and I only got about half of the product tell it ran out of spay. Kinda BS if you ask me, spend $40 on a spay can and only get half the product in the middle of a big project.

Sprayed all the stiffeners as well as the bare metal that I cleared on the unibody because I was, and honestly still am, worried about moisture getting trapped in between the 2 pieces of metal and rusting it out. I can't say it'll work, or not, for that in the long run, but I can say that this does work excellent as a weld through primer. It didn't cook off too bad near the weld area either. I was worried it would, and leave an area around the weld exposed.I think I may try that spray in body cavity wax crap that I've heard of, to try and get a good water barrier in there.I've investing far too much into this damn vehicle to have the frame/unibody rust out...This is good stuff, and a can actually goes a long way. I bought 2 cans and have used them for several welding projects. I even sprayed my tow hooks with it, then clear coated over it using rustoleum custom clear.I know that's not what this is for, but they did turn out great.