Thread: Primer Questions

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Originally Posted by 35chevy

I think all the rust under the body filler crap stems from the days when we used to make body panels look like a sifter in an attempt to straighten it. All the holes in the backside allowed moisture to creep in. Also the old lacquer primer was porous and soaked up water like a sponge. we used to wet sand it, then paint over it trapping in the water and we fought blisters and everything else. Boy we have it good now days. With the "new" stuff I've primed before I put on filler, and put filler directly to metal. Either way seems fine as long as there are no holes on the backside. I remember a time when we never put filler over paint, but I stopped grinding off all the paint several years ago. It seems to work fine over good quality paint and I don't have any come backs. If I'm starting from scratch with a clean metal panel, I just do all the filler work first, apply some etching primer and then seal it up with a good urethane or epoxy primer. Seems to be easiest for me. Some of the body filler on my '35 is 15 years old and it looks as good as the day I did it.

yes same here the body work on my cars are lead and did some of it back 25+ years ago and ppg DZ lacquer primer on the chevy still holding up good .i stop doing body work sometime ago for a living. i allways put the filler on the steel to if striped clean to