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Whats the best blasting media for paint and rust removal?


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#1 City Hunter

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Posted 17 January 2009 - 10:39 PM

I'm gonna pickup a blaster to do some paint removal and rust removal. I want to use the media least prone to warping metal as god knows my cars metal is thin enough already. I'm thinking glass or soda?
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#2 thisismatt

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Posted 17 January 2009 - 11:03 PM

You're not going to warp anything with a home blasting setup...

I have not yet begun to defile myself.


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#3 DISLEXICDIME

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Posted 17 January 2009 - 11:22 PM

o yes you can my buddy fukkred up his fender with the wrong shit and to much pressure
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#4 sly-yota

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Posted 17 January 2009 - 11:26 PM

turn the pressure low and either use glass or nutshell (acorn/walnut works best.)

havent warped a single panel yet and i mostly use glass as its easy to come bye and well...that makes it better to me lol. :lol:

#5 datsunrides

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Posted 18 January 2009 - 05:09 AM

I've blasted 2 cars + numerous parts with my Harbor Freight special. Used #30 mesh sand ($4 a 50lb bag) @ 90 psi. Never warped a thing. Key is to keep it moving. Never stay in one place very long. If you build an enclosure to trap the sand, you can use it about 3 times before it's dust. Just "filter" it with a sieve. A good HEPA facemask is your friend!

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#6 SHADY280

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Posted 18 January 2009 - 08:15 AM

i use silica sand, stuff kinda explodes on impact. i found with my princess auto blast cabinet, i had to silicon all the seams as i built it. it leaked otherwise and sprayed very fine dust everywhere. nut shells wont take rust off as effectivly as sand. shells are really only good on body panels where it may warp in a high pressure stand in booth.
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#7 freaky510

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Posted 18 January 2009 - 08:33 AM

i was told not to ever use sand it will trap moisture in side the metal. I was told to always use a bead or silica type bead.I guess the sand has a little drop of water/moisture in the middle holding it all together and when it hit the metal it gets pounded in to the surface. I don't know some oooolllllddd ass body guy jumper my shit at the paint store one day and everyone behind the counter agreed with him . so i have never used a sand myself
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#8 510er

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Posted 18 January 2009 - 10:25 AM

Okay so everyone should know that my business is rust repair! AND I USE SAND! it is cheap as hell and it is the only thing IMO that will get the metal completely clean! once you have blasted it if the metal is not one uniform color it is not clean. If you move fast and keep the nozzle far enough away you will not warp anything. sand is extremely cheap and reusable depending on what kind you get. My .02
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#9 City Hunter

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Posted 18 January 2009 - 10:56 AM

so now the question is, with glass bead do I need a spendy dist mask, ro can I get a cheaper one? Are they both going to be putting silica in the air?
78 lancer coupe g54b turbo
81 Challenger Galant Lambda 2.6 turbo

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#10 510er

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Posted 18 January 2009 - 10:57 AM

there your lungs :eek:
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#11 Figbuck

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Posted 18 January 2009 - 11:31 AM

I'm with 510er here. Hunter, I went to Mason's Supply on SE 7th near SE Division and bought bags of green abrasive sand #20/50 grit and with a stupid little cheap gun thing, stripped a bunch of stuff.It is slow but it get into places that you can't sand by hand.

I went through a couple of bags of sand @ $5 before I figured out that I could put down plastic in the driveway and run the stuff back through a window screen to re use it. New sand cuts better, but used sand is more gentle so I keep two separate 5 gal buckets for different applications.

Eye protection and paint respirator is a must!

There is a place over on 82nd that does media stripping and for what they charge it it is a deal, unless you are like me and don't have the five bucks for a bag of sand in the first place. Reet. :D

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#12 Cuts metal like mad

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Posted 18 January 2009 - 01:07 PM

I did some concrete work for guy with the largest collection of pre-1960 fords, he has every ford made from the beginning to 1951 and every one is a 100 point car (if you have any idea what it takes to build a 100 point car... Well), and he only uses soda blasting.

#13 thisismatt

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Posted 18 January 2009 - 11:36 PM

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I've found the pot blasters work a lot better than the siphon style. They move a lot more sand for the amount of air!

I have not yet begun to defile myself.


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#14 Figbuck

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Posted 19 January 2009 - 07:51 AM

You're right Matt...

A quick search revealed the little nugget I remembered:

http://forum.ratsun....=blasting media

The ever resourceful Mike Klotz got it dialed in as I remember...

http://www.nwde.org/....s.asp?TID=5152

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#15 dat620

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Posted 19 January 2009 - 08:58 AM

we use soda here at the body shop i manage, easy clean up, washes off with water, great on rust, use a regular dust mask, bio degradeable, and washes off concrete easily..:D, and no warpage, takes off body filler, rust, grime etc...we do all the old vehicles with it..:D