what type of media?

[farmerjim]

i need to sandblast some parts that were previously powdercoated. i tried using some pretty fine sand media but its not working too well. any suggestions on what media would be best. thanks jim

 

[rswyan]

Powercoat paint is pretty tough stuff ..... had to remove some from our loader bucket to weld on reinforcements for the top edge and the toothbar bolt holes. I tried using a wire brush (both knotted wheel and cup types) in 11,000 rpm grinder .... basically wouldn't touch it .... I finally ended up just using a grinding wheel .... and it still took quite a bit to get it off.

My take is that if you have an oxy-acetylene torch, heating it enough to break the bond would be the way to go. I don't think you would need to overheat the parts .... once you get it hot enough the paint will probably catch fire and burn ..... good job to do outside though ..... /forums/images/graemlins/grin.gif

 

[tlbuser]

take a look here blast media

bottom of the page gives a general guideline

 

[automech]

That Black Beauty is good for taking off paint and rust. I get it for 10 bucks for a hundred pound bag at a consruction supply company near where I work.

 

[tlbuser]

Yea, I wouldn't necessarily buy from this place. either. Just had a decent general guideline for what does what. After you mentioned it. I went back and looked at the price list. A tad high when they're asking almost 20 bucks a gallon for WALNUT SHELLS.