Ok, we took our 74 Super Beetle down to bare metal, did all the body work and sprayed the car with the Rustoleum wet sandable auto primer. This is our first project and basically thought that would be ok as we wanted to keep it from rusting. I bought this Metallic Urethane Acrylic Paint kit from another sight as it was all I could find. Can I wet sand the bug and spray this over it? If I have to use an additional primer before I paint can it go over the rustoleum or will all that have to come off? I dont want to strip this car down again.
I'm not familiar with the Rustoleum primer. Is it laquer based or is it a 2k?
If it's either then the paint you've chosen will be fine. I recommend using a sanding sealer before paint. As for your paint itself, I've used those kits and they are fine. For the money you spent on what ends up being 1 1/2 gallons of sprayable material, you did fine? here are the last two jobs I did with paint from paintforcars.com.
Rustoleum makes auto primer?
Originally Posted by boneham
If you're talking about spray cans of primer, you've wasted a lot
The spray cans are lacquer based and are NOT for bare metal.
Any wet sanding goes right through the primer, it's not waterproof.
In fact, it's like a sponge and soaks up the water, getting everything
underneath wet, and any metal, rusty.
Also being lacquer based it continues to shrink for weeks, or even months.
It is the worst thing to paint over.:cool:
Based mainly on my own curiosity I did a little research into rustoleum auto primers and ended up on the phone talking to a customer service rep at the Rustoleum Corporation.
Their auto primers are alkyd based (non catalyzed enamel/oil based). They can be safely wet sanded or dry sanded. I asked them specifically if an acrylic urethane paint should or shouldn't be sprayed over their automotive grade rattle can primers. I was told " spray a little of the topcoat paint in an inconspicuous area on the primer to see if there is going to be a reaction (paint lifting like you applied paint stripper). If no reacting "then you're good to go". If there is a reaction then you have a serious compatibility issue.
One question by the poster was " should I use a sealer over the Rustoleum primer " ? The sealer may cause the primer to lift just like the topcoat paint might cause it to lift. Its a crap shoot at best.
Next time use professional grade automotive primers that have to be sprayed out of a spray gun and require a catalyst/hardener.
That is good info to know.Mike
Originally Posted by Phil V
i used rustoleum rusty metal primer on my 61 while doin the body work, then scuffed it and spray a few coats of epoxy sealer over it. I didn't have any sort of a reaction with it, but it is definately a crapshoot