Topcoating POR

[RockDoc]

Hi all,

As part of a front axle rebuild, I have cleaned a number of the castings (knuckle etc.) and am going to POR them before re-assembly.

If I apply a topcoat (tremclad, I think it's rustoleum in the states), do I need to wait for the POR to fully cure and scuff it? Or will it hold if applied after the POR has been touch-dry for a day or two?

Also, I am using the silver POR, does this stand up to UV light better than the others, or does it still need to be topcoated?

Thanks,
Curtis

 

[thecrazygreek]

Wait and scuff, then shoot over the top.

You may want to use the tie-coat primer as well, but I never have, with good results.

 

[Landcruisin'60]

Let it dry, sand it with some 600 grit and you should be good. Straight from the POR15 site. I think you can also wait until it is tacky then spray a dusting of primer, then let it dry and spray with a couple full coats of primer and paint.

 

[Cirbo]

I topcoat when it gets tacky. I use the patented latex glove test. When the glove sticks, but no paint is transfered, I topcoat. (with great results to date)