The debate on filler over bare metal or epoxy will never end and it is really quite simple to navigate.
These are the FACTS, pure and simple.
1. Epoxy over the metal before filler is the best way to do it.
2. Filler over bare metal that is then protected under primer is going to out last all of us. It will be in the wrecking yard with that filler under the paint and no one will be the wiser, we will all be dead and gone and it will still be there.
End of discussion now let's get on to something more important.
PS, and the guy is wrong about fillers not "chemically bla bla" with the epoxy. Yes it does and the reason the manufacturers of fillers don't recommend it (which they DO in a certain back handed way) because they can't recommend using their filler over EVERY epoxy ever made. Now, if they can't recommend it over EVERY epoxy ever made which ones are they going to alienate by calling names? Their products are sold in stores that sell paint, which paint companies are they going to tick off and throw their fillers out on the sidewalk? I had this told to me by a guy in the tech department at Evercoat standing next to their booth at NACE. Now, if you read their recommendations every product in their "Metalworks" system has a recommendation for applying it over OEM paint and primers. Just how does it "Chemically bond" with the paint and not an epoxy primer.
And Evercoat DOES NOT recommend 36 grit ground metal. 80 grit is the coarsest grit recommended for ANY step of the filler by Evercoat.
Last edited by MARTINSR; 01-16-2012 at 12:28 AM.