sand blasting

Do not use sand use crushed glass . Smoother finish and not as much heat on the panels. Try both at night and see the difference. Not Glass beads, Crushed Glass. I spread a rubber truck tarp, Lift the ends so it gathers in the middle shovel it up and then sift and reuse the material. Always trying to save on consumables. Heavy plastic and a lot of duct tape. Install old parts in the holes to seal the car and blast away