Thanks ,I waited about 30 hours ,I don,t have a paint booth ,i just painted in my shop ,it sanded real easy and buffed easy ,i had a couple of runs ,they sanded out real easy ,it just depends a lot if it air dries or is baked ,i have sanded and buffed in 3 or 4 hours after baking at 160 degress for 20 minutes in a down draft Blowtherm ,i went to Sikens Paint school in Dallas about 5 years ago ,they had a new clear that you could sand and buff in 5 minutes ,You had to bake it or put a heat lamp on it for 5 minutes ,It was real toxic so we stayed away from it ,It wouldn,t activate unless heated ,it would stay wet ,It sprayed real weird ,You put a light cut ,not wet and then hammered a real heavy 2nd coat ,and that was it ,You had to have Fresh Air when you mixed and sprayed ,No exceptions