How many hours to block sand?

How much metal work did you have to do? The more oanel replacements or patch panels you have will add time to the process. I have seen some cars that the metal work was crappy on that there was no way to ever make them look right. A good clean (as possible) slate is what you need before you are ready to start getting ready to prep for primer. Luickily most of the Oklahoma cars have mostly rust free bodies unless they have the dreaded cancer under the vinyl top.