Panels resprayed

[Rad1o]

I know this is not a specialist car forum. But can anyone tell me what went wrong?

My daughter's Skoda has this horrible lacquer peel. So we / she decided to respray some parts of the car. The paint was sanded down often to bare metal. We used spray cans and started with primer / filler, then used the car's base coat and clear lacquer. The lacquer was Simmonez.
The panels were cleaned with alcohol wipe and a tack cloth before spraying.
The layers had time to cure.
It looked good, but after a few weeks cracks and small rings started to appear. The rings seemed to come after rain falls. The cracks just developed.
Very disappointed. At first I tried to polish it out and it worked for some small rings and minor cracks, but the cracks started to look likesome planetary rifts.

We also did the mirrors and I think it was a different clear lacquer. They are still o.k.

 

[Old Salt]

A reaction between the different paint layers e,g, manufacturer’s, bare metal primer/filler and Simoniz. You say the paint had time to cure but typically at least 24 hours is required between coats and that is in warm temperatures.

 

[Rad1o]

It was done last summer, so somewhat warm.
The cracking only appeared weeks down the line, not immediately.

Do you have any experience with paint work?
Can this cracking be fixed or is this ideally a paint off job?

 

[Old Salt]

Only experience I have is diy spray cans although I have been “patching” classic cars for 55 years or so. You could try redoing it once the weather warms up a bit. You can get barrier coats and the humblepaintsprayer on you tube has some good videos on rattle cans.

Link below

Pardon our interruption...

It could have had some solvents that hadn’t evaporated completely. You will need to sand out that cracking, then use sealer, then prime and paint. If you can find a small bodyshop and plead poverty you may be surprised how economical it can be. I paid £300 for a wing and a subsequent trip for a door on a brand new car cost me £150 because I was a good customer

Son in law had a C class bonnet done for £500 and added £1500 to his selling price.