PDA

View Full Version : Question to the body shops...

wretched73
10-07-2009, 11:27 PM
What type of media do you use when blasting rust/bondo/paint from a car? I have searched a good bit but I can't really find what I'm looking for. All I want to know is what someone who actually does blasting uses lol Any help would be appreciated, Thank you!
r0nin89
10-09-2009, 01:28 AM
From what I read crushed walnut shells is suppose to be the bees knees for blasting. Take off anything with no pitting into healthy metal at all.
WildBillyT
10-09-2009, 08:17 AM
Soda blasting is the big thing now. Cleans well and won't remove the metal. But you have to treat it properly after (washing, etc) and get it right into primer.

Or, if your car is not that rusty or you have big balls, you can have the whole body dipped in a rust removing solution.
HardcoreZ28
10-09-2009, 10:54 AM
Soda won't remove rust but strips paint great. Also if you keep the vehicle inside after you can wait months without priming it because of the coating left on the vehicle.

Walnut shells are a good option for rust removal as well as plastic media (urea). I'd stay away from black beuty, stardust, or other alum oxide products as they can easily cause heat warping.
iroc86NJ
10-09-2009, 11:34 AM
I use to use sponge jet products http://www.spongejet.com/products.php

when blasting aluminum we used walnut.

for paint straight up soda.

for paint w/rust, tar or bondo we used a soda/aluminum oxide mixture.

I know alot of ppl don't like using any type of aluminum oxide on sheet metal because of the warping. However, if you have the right equipment ($$$$$$$) like something offered by sponge jet which allows you to dial in your velocity/media ratio's it's the best for removing unwanted material safely.
WildBillyT
10-09-2009, 12:46 PM
Soda won't remove rust but strips paint great. Also if you keep the vehicle inside after you can wait months without priming it because of the coating left on the vehicle.

Walnut shells are a good option for rust removal as well as plastic media (urea). I'd stay away from black beuty, stardust, or other alum oxide products as they can easily cause heat warping.

I must have mixed up dipping with the soda blasting as far as surface cleanup goes.

Black beauty? I'd like to see somebody try that! :lol: