Smokey, Don't worry about it. Just keep the nozzle going and don't let the nozzle point to one spot too long. On the chassis you are pretty safe though. Make sure the chassis is degreased and pressure washed before blasting or you will imbed the grease into the metal. That makes for bad paint jobs. If the rear end is still attached, make sure the vent is taped shut real good and be prepared to dissasemble brake drums etc. because the "sand" gets into everything. Tape up the ball joints real tight too if they are still on the chassis. Be ready to paint or primer what you blast right away when you are finished. Just think ahead and make sure the bare metal won't be sitting long, and think of where the sand will get and will be hard to clean out. If you have to clean and/or wash out sand, once you get it cleaned out, clean it again. Use air pressure and try not to get it wet when there are bolt holes or the like. They are hard to clean out. Enjoy!
