OK i just repainted my car and i phiscaly did all the prep work. I cam e to find out that the reason it spider cracks is not because of the paint, but because of the clear coat, for, my car, ford used too little and its also possible they used too much hardner to cause the clear coat to dry to fast. Which in turn it did not set right so the heat from the engine causes the paint underneath to spider crack.
After i preped it i took it to my friends shop, and they confirmed how thin the clear coat was. I left the hood un sanded and had them sand it. in the area about 4 to 5 inchs fomr the left and right edges of the hood in 20 seconds of sanding we were talking off paint. In the middle of the hood it took 2 pads to get throught the clear coat. and this was 400 grit sand paper the thinest to use.
So it really has to do with the clear coat, Becasue in the areas it took the least to go throught the coat it was spider cracking on my car.
Roz
