Por Metal Ready and the white residue+
I've never used this stuff before and I have a question. That zinc phosphate residue that's left over seems like it's kinda loose. I mean I can, without too much effort, remove some white powder just by rubbing the surface. Seems like the paint would not stick?
The project is a homemade locking rural mailbox. I cleaned the metal with Por Marine clean, then water, then dried, then left the Metal Ready on for 15 minutes, then rinsed. The top coat will be Rust Bullet. Should I try to remove some of this white powder? I know that's what provides the rust protection but I just can't see how the paint will stick properly if this stuff can be rubbed off. Please help if you have experience with this product. And thanks a bunch.
Update: Went to the manufacturers website, the powder needs to be removed with a wet rag.....apparently my rinse didn't remove it all.
Last edited by Dave Carney; 02-13-2005 at 12:23 PM.