Slag for sandblasting?

[1973mach1]

My uncle got me a bag of slag for sandblasting, its fairly coarse and dont seem to want to work good with my Craftsman sandblaster, keeps clogging and wont come out, Would I have better luck with play sand? This stuff they use at his work to clean concrete off forms and equipment, I just need to removie rust from the undercarriage.

Thanks,
Jim

 

[3spd on floor]

are you refering to welding slag? if so i wouldnt use it because it is sometimes corrosive, thats the reason that they remove it from the weld in the first place. is actual sandblasting sand that expensive?

 

[dolfan87]

You want silica sand, probably in a 60 grit. You can get it at a building supply store (sometimes ACE hardware has it)

MAKE SURE you cover up, and wear a respirator. You don't want to be breathing that crap into your lungs. Eye protection is a must also.

Good luck


87

 

[1973mach1]

IM not sure its tiny black stone chips called "black beauty" but alot coarser then sand.

Thanks,
Jim