quote:Originally posted by jeff6559:
If it's blasted, the media leaves a residue that protects it from rust for a pretty long period of time. Just don't touch it with your hands or body as that takes away that protection and lets surface rust start. Besides, you don't want to prime until you've got as much of the media out as possible.
Blasting provides no measurable protection. Since soda or walnut shells don't get into the metal they don't expose it as much to fresh rust like sand or glass but there is a hint of rust if you look close in a very short period of time even in dry weather. There is no time to waste here! That is why I am going back over every inch right before I prime. Getting the media out is no issue. Roll the car around on the roto, vacume here, blow out there. Wherever sand or dry media is it will not create future problems like liquid. It is not going to get into a channel and start stripping anything on it's own. You only going to sand what can be primmed with an air gun so you can work the cavities latter anyway.
When I first put this car on a roto before stripping, some blasting material and some "bondo dust" came out from when the car was re-done in the 80's.