I have managed to screw up the side of my bride's car. Will have to do a couple of little pushes with the porta-power, grind off some paint, weld on some pull pins, pull, and then lay down some filler - not a huge deal.
In a former life, I did lots of painting and bodywork, but that was 30+ years ago and back then, we just put down filler over bare metal. From what I have read, it is best practice now to undercoat bare metal with epoxy primer prior to filler. This makes sense to me; I know that fillers tend to absorb water and then rust. Having a sealer under the filler should mitigate that problem.
Being lazy, I really don't want to try to pull out my spray equipment and am wondering if anyone has experience with Eastwood 2K AeroSpray Epoxy. The areas I am working on are fairly small and just doing it with a spray can would be much easier.
What says the hive?
NOHOME
MegaDork
7/7/19 7:00 a.m.
I say howlong does this repair have to last?
Filler on metal actually has some bond strenght advantage over filler over epoxy, so not like the repair is going to fall off.
My understanding was that one of the possible by products of filler curing was moisture. Having epoxy underneath the filler means that moisture wont meet tin.
But do you really care? If the car is going to be gone in 5 years, I would fill, prime and paint and be done.
Now, if you plan to do this over several sessions where the car is going to get rained on between sessions, I would fill, epoxy prime the same day and then finish the finish as time allows.
Pete
How about if you're starting with bare fiberglass and some filler? Epoxy prime, then primer-filler (high build primer), then top coats? Or just shoot the primer-filler over the bare fiberglass and filler?
It's been a few years, but the last time I dealt with it, everyone said to avoid "epoxy primer in an aerosol can." For it to be an epoxy it's got to be at least 2 parts, some kind of resin and catalyst, they've got to be mixed to react.
I last bought epoxy primer around '14, and Summit Racing had the best deal I could find. I think I read somewhere that Kirker manufactures Summit's paints.
I sprayed it with my $40 Campbell Hausfeld HVLP spray gun, it worked out well, and I just barely know what I'm doing.
SkinnyG
UltraDork
7/7/19 10:10 a.m.
I believe the Eastwood can has a trigger that you pop in the bottom, which releases the hardener into the rest of the primer, so it -is- actually 2K-in-a-can. I might be wrong.
Spray epoxy primer would somehow be unhardened? I would be a bit suspicious but I have no experience.
(edit) if the post above is correct then it should be fine, you will of course have to use the can within an hour (?) or so.
Yup, looks like he is right. Looks like it has a 48 hour pot life!
The propaganda...eer Ad... says it has a 4 day pot life after you mix it
Edit- beat me to it
