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Old 01-25-2016, 06:28 PM
weldtoride weldtoride is offline
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Join Date: May 2009
Location: Northern Illinois
Posts: 896
Default Pounding Sand

Lots has been written in different threads re: dangers of silica.

Taking more than a hint from Gareth,
Quote:
Originally Posted by Gareth Davies View Post
How about expendable shot blasting media such as aluminium oxide or copper slag? .....
As I was researching a new low silica sand for my blast cabinet, I read that Black Diamond has very low silica content. So I looked up the MSDS on Black Diamond, it has less than 1% silica content, in fact, according to the document referenced below,
Quote:
"Silica concentrations have been below quantification levels, less than ≤ 0.36%, in samples taken each year since 2000."

http://www.ati-blackdiamond.com/medi...sds-4B5219.pdf
Black Diamond is a readily available by-product of coal fired power plants here in the US, I paid $7.50 for 50 lbs at my local big box farm store recently.

It comes in 4 grits: extra fine through coarse. Here's the fine grit, works just fine in my blast cabinet. Also pounds just like the sand I removed from my bag, and no dust emanating from the Velcro closure like the play sand had.

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Mark from Illinois

Last edited by weldtoride; 01-26-2016 at 10:00 AM.
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