Powder Coat and Paint

[Railroad]

My 20th anniversary frame is powder coated gray. I had some places that need to be touched up.
I bought some matching paint, in a spray can, from LVP.
More often than not, where I spray to touch up the powder coating on the frame, the adjacent powder coating will buckle up.
It seems the paint is getting under the powder coating and making it turn loose.

Any advise or comments.

[Bob Cowan]

Then there's something wrong with your powdercoat. It's tough to get PC off of anything. Even aircraft stripper doesn't work that well. Can you scrape off clean PC with a metal tool?

[Railroad]

I do not doubt there may be an issue with the powder coating. I had some pull loose with the painters tape. It had rust under the powder coating. I removed all the loose stuff and sanded off the rust, paint, no issue. Other places, maybe a scratch or whatever, clean it up with some sanding, spray, check it later, surrounding coating buckled.
Nothing I can do about the coating, thought it might be something I am doing. Will sand again and try lighter coats, letting them dry completely. Thanks for the reply.

[Bob Cowan]

I had some pull loose with the painters tape. It had rust under the powder coating.

Yeah, that's a problem. I don't know where you are on the build, but I would consider sanding down the whole frame and refinishing it.

[steno]

I’d call FFR and send some photos! They’ll make it right! Who knows... they might have you get it redone locally!

[Railroad]

Other than some small items, I am waiting on my window with Jeff Kleiner to come open. Therefore redoing the frame is not an option. No need in stressing myself in dealing with F5 on a remedy. I am not going to undo it and start over.
The frame coating seems tight in most areas. Just found the bubbling after paint unusual. Thanks for the advise.

[RBachman]

Other than some small items, I am waiting on my window with Jeff Kleiner to come open. Therefore redoing the frame is not an option. No need in stressing myself in dealing with F5 on a remedy. I am not going to undo it and start over.
The frame coating seems tight in most areas. Just found the bubbling after paint unusual. Thanks for the advise.

I'm pretty much in the same boat as you (and also waiting on a Jeff Kleiner window for paint.) I agree on just dealing with the poor powdercoating rather than dismantling an entire car. Just let it ride. My powdercoating flakes off also. Thankfully it's black and an easy match. Painting over rust, weld splatter, and obvious other issues clearly show inadequate preparation. In hindsight, I'm sure better quality is achievable with a local professional who is less likely to skip on critical preparation. But the fix isn't difficult. Just sand back to good powdercoating, feather, prime, paint.