Sandblasters?

I've been in the refinishing business for 20yrs. Many a metal project has crossed my path. Even with an experienced blaster (usually a low man on the totem pole) thin steel (body parts) usually come back with dimples in the surface. Thats why bondo is so invaluable. Bondo doesn't have a long term life (all organic products have vapor pressure and thats why these products eventually fail). I always use and/or recommend a specific sprayable paint stripper. It lifts off any type of coating and unlike your standard paint stripper it does not need to be neutralized. Any grinding can be done with some of Nortons newer metal abrasive products. The less bondo you use the better the overall results especially if you do your own body work and spray finishing.If you need some more info on this stripper email me ,Thanks. PS Stay away from polyester coatings. They usually need to be sand blasted.