74 power wagon dream truck...

Okay learned a lot today...
First the $16 Harbor Freight spray gun is completely awesome! .. completely changed my outlook on painting.. likely won't buy any more rattle cans again.. I'll probably just use up what I have and buy industrial enamel...
My little 6 gallon Harbor Freight compressor did fine for this little trial but I do think it would be nice to have something bigger..
So what I learned about spraying this xionlabs 2 in 1 stuff.. I was seeing how it would work on non-rusted metal, my dog house that was partially sandblasted and still had some Factory paint. The first coat went on really nice and I probably should have stopped right there.. I didn't let it 100% dry by any means but went on with a thick second coat and I believe that's what ended up peeling on it.. lesson learned..
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It's like The Good the bad and the ugly LOL but when I took my heavy wire brush on that ugly part that flanked it just knocked off a few of the flakes and was still Rock solid like concrete..
I think tomorrow I'll just scrub and wash my floorboards and let them dry overnight and then Monday try and mix up some the stuff and spray the floorboard inside and out.. WITH ONE COAT!! LOL...

I've had that happen as well when I didn't wait long enough between coats. My research came up with the same as you. Not enough time for off gassing during cutting process of each coat. You won't regret going away from rattle can. I too have just switched over. Bought a cheap husky gun for all the primer work I've done. Just started doing color. Using a good quality gun for that. Amazing how much easier it lays down. Keep up the good work