[Coaner]

I don't have the luxury of letting my dd sit until I get all the body and metal work done and was wondering instead of rattle canning some primer on every time I get done with a section just to sand it back off again before I start with the real stuff can I just spray my automotive primer on and leave it sit as is until im ready to paint the entire truck, is it porous, will moisture affect the primer, is this a bad idea in general. I dont want to cut any corners I'm not looking for a show finish but dont want it to look like crap either it would just be easier to do one bed side get it into primer do the other side so on and so forth. Thanks guys

[OneMoreTime]

Sending a Pm..

Sam

[Runnin'OnEmpty]

If you're using epoxy primer, you can spray it and
drive it; no worries about it being waterproof.

If you're using etching primer, then it is somewhat porous,
and driving in rain might cause some rusting underneath.

Rattle can primer won't give much protection, although
there's some 2K epoxy in rattle cans these days....might be
worth a look.

[Coaner]

What about 2K filler primer?

[Lizer]

if you are considering going the 2k route why not go with epoxy? Check out this thread to answer your question about the 2k filler primer

2k primer on bare metal

[302 Z28]

Originally Posted by Coaner

What about 2K filler primer?

Not water proof, it needs to be epoxy and even with that the epoxy over time will chalk up.

Vince

[OneMoreTime]

Epoxy will over time chalk up but having to do a good scuffing sure beats redoing rust though..m

Sa

[Runnin'OnEmpty]

Coaner, if you're sold on the epoxy primer by now,
but don't want to drag out the spray gun every time
you do body work, how about rolling it on? A small trim
roller works good for covering fresh body work, and you
can mix up only the amount of primer needed at that time.
(With the added benefit of no masking, no suiting up, no
noisy compressor, no gun cleaning, etc., you get the idea.)

Yes, you'll need to block it out a bit, but nothing like
having to sand off the rattle can stuff and starting all over.

The epoxy primer will give a worry-free finish that you can
drive in all kinds of weather, until you're ready to move on....

[Coaner]

Thanks for the responses guys the epoxy is on the way i might have to give the rolling on a thought, what grit should i prep the factory paint before putting down the epoxy? and what should grit should i scuff the cured epoxy with before applying the next coat of paint.