Silica is a health hazard, I'd look for alternatives simply because of that.
As to sand at your home centers it depends, some of it can be very course. It isn't bad to have some available though as it is suitable for lost foam or investment casting and other foundry uses. If you have to you could always screen it yourself.
As to alternative sources look at farm supply shops. Esoecially ones cattering to DIY, they often have materials usable by foundrymen.
You could always try a local quary.
Finally there are the nation wide foundry supply houses. For sand though you shouldn't need to go this route. Just look outside of the home center suppliers, instead focus on professional supply houses.
David A Frantz
websterindustro@mac.com
Sent from my iPhone.
On Aug 27, 2010, at 9:59 AM, aces4me <aces4me@gmail.com> wrote:
> After doing a little lost foam casting I'm looking forward to doing some casting with green sand. I've got bentonite but damned if I can find a local source of fine silica sand. All I can find locally is "play sand" or general purpose sand at Lowes and Home Depot. Does this kind of sand work OK as green sand?
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