[Rich Biebel]

I repair welding equipment. Have been doing this for 15 years. I test everything I repair especially mig machines......I have no experience with a "weldable primer" and never heard of it......but I know from experience....mig weldling "thru"any paint is difficult to get it started. You can clean one area and get the weld started and it burns off the paint in front of the weld. Mig and tig welding like clean material......

I am sure the product works but probaly not nearly as good as the manufacturer says.....My guess is it has conductive properties, meaning it does not insulate between the gun and the ground. It also probably has high metallic content and the paint burns off without contaminatiing the weld site

Do a google search and go to any forum where pro welder/operators talk about things like this......I would bet they say they hate it and grind it off.....LOL