Decided to rattle can spray the door interior. It was a gloss black. Sanded it lightly with 150 grit, then 220, wet sanded with 400. Sprayed a filler primer and when it dried I got a bunch of the cracking. What do I do with this?
Paint cracking?
- Thread starter Backally
- Start date
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TrailBeast
AKA Mopars4us on Youtube
Any time new paint is put over old, cracking can be expected.
Sometimes does it sometimes not.
Take it down to metal and respray.
Sometimes does it sometimes not.
Take it down to metal and respray.
Stuff out of an aerosol can react IF not the same brand, did it all cure at right heat for right amount of time? Did you wipe it clean with wax and grease remover or maybe even laquer thinner? B sure to give right flash time between coats. Metal needs to be right temp as well as air temp.
Nothing than an not be easily fixed. Just sand it down to bare metal like ^^^ said and go again.
Nothing than an not be easily fixed. Just sand it down to bare metal like ^^^ said and go again.
Some paint/chemicals don't play well with each other. Prep is always on top of the list. I would suggest painting a piece of metal using the same method and see if the paints turn out well. Temps can play a part here also. Sand your door smooth apply your primer several coats and give it more then enough time for it to cure.
Although I was hoping for some miracle cure, what you guys say is what I was expecting. I don’t know what paint was on it previously, that’s how I got it. I didn’t use a wax remover, will get some. I thought after sanding good and washing with soap and water that would be enough. Another learn as I go project
Northern Grit
Well-Known Member
Something else to keep in mind. Almost all rattle can paint's will do this if you wait to long between coats.
moparmat2000
Well-Known Member
Looks like lacquer over old enamel paint. It typically reacts that way.
What cracked was the filler/primer. I think the black lines I see is the black paint under it. I’m going to let it dry for 24 hours, then start sanding
moparmat2000
Well-Known Member
Sand it all back off, and start over.
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