4 years ago, after repainting my 1980 Chrysler LeBaron, I'm seeing many lines appear in the paint. These lines appear all over, but especially around corners, and much more on flat, upright facing surfaces, not really on the sides. This leads me to believe it may have something to do with being in the sun a lot.
We repainted it the original color, with the original paint, and used commercial grade clear coat. The paint was applied by a friend whose day job is as a body mechanic, though not usually painting, though he had experience.
Waxing masks the lines for a short period, but then they become visible again after a few weeks. It only seems like I am seeing more and more of them. They are not scratches- there are far too many and I'm protective of things being set on my car.
What is causing this?
Is there anything I can do to prevent more of these lines from coming?
Is there anything I can do to "erase" the existing lines?