blasting help

[Craigerf100]

so ill be blasting some parts here soon. 2 fenders and a grille. i know zero about sand blasting. any help would be appreciated.
heres a link to some im looking at.

http://www.harborfreight.com/catalogsea ... &q=blaster

im not looking for the best on the market, just to get the job done.

the biggest job ill be using this on is the sides of a short bed.

ill be painting the grille a grey and the fenders a black/grey primer for the time being.

any advise on what to seal the parts with after primer?

[sargentrs]

I have one similar to this http://www.harborfreight.com/portable-a ... 37025.html It has been more than adequate for everything I've done. For media, I use Black Diamond 30/60 grit. Its a coal slag media that doesn't leave a silica residue like sand does. Its pretty nasty, covers you in black dust, but rinses off with a water hose leaving nothing behind. I also find it doesn't generate much heat when blasting and have never had a warpage issue.

[stephen44]

also it's cheap - get mine from tractor supply or northern rock - make sure you get right grit size

[sargentrs]

Yeah, the bags have the grit on the end, 20/40, 30/60, etc. The 20/40 is a bit coarse. The 30/60 will take off rust, paint and grease without roughing up the surface too much. This is the 20/40 but they usually carry the 30/60 for the same price. http://www.tractorsupply.com/en/store/b ... edia-50-lb