Sanding epoxy primer

After the sheet metal is in epoxy, what do you guys use to sand it with to start your body work? Aren't most DTM epoxies non-sandable?

That's what I've been told. I think the worst part is that it starts plugging up the sandpaper.

The epoxy i use u got a 3 day window to put filler on before you need to sand before applying filler. if your past the 3 days i normally just rough the area with some 80 then go from there n make sure everything is roughed with 180 before i go onto primer surfacer.

i'd 180 or 120 it personally, the biggest thing is that it gums up the paper, thats why they classify most of them as non sanding.

a trick i've discovered is to wet sand the epoxy primer . but instead of using water use wax & grease remover on a rag , not wetting the entire surface but concentrate on small areas at a time . the wax & grease remover keeps the primer from building up on your paper . this trick also works on sanding uncleared basecoat , for removing blemishes etc...

omg ^ ^ ^ the one and only dustin haven, your still around!?!?

dustin haven

I love that answer from DHAVEN creating friction through sanding with a flammable product. That is the smartest thing I heard all day . tech4life is right some epoxy primers do give you that window of oprtunity, but, I wouldn't trust that too much. 2 types of adhesion that's it. Right after you spray the epoxy primer put a couple coats of urethane primer "top coat primer" something that sands really good. Hit me back if you got anymore questions. Fully Licensed to answer this stuff.

Thats pretty much the same problem I have: Sandpaper gumming up. I normally scuff the epoxy with 80 or 180 grit, then proceed with the body work and surfacer. Someone asked me the other day about it and I didn't have a definative answer. So I started thinking about it and wondered if there was a better way to sand it that I didn't know about. Thanks for all the info.

dont be scared '' dirty cox '' my method has worked for me several times with no fires .the solvent base of the wax & grease remover breaks up those little balls that build up on the sandpaper. i only use it when needed , if i missed the top coat window or to remove blemishes ...