"Fred the Red Shirt" wrote in message
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On Jan 15, 12:30 am, "Maxwell" #$$9#@%%%.^^^ wrote:
"Fred the Red Shirt" wrote in
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On Jan 12, 11:04 pm, "Maxwell" #$$9#@%%%.^^^ wrote:



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What's the point? If you are going to buy bentonite, why not buy a
quality
molding sand like silica or olivine as well?

Kitty litter is cheap.

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Yeah, but the castings it produces is pure ****.

I think you need to cover your sand better between uses...

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Why would anyone want to use things like top soil and kitty litter for
molding metal castings, when high quality molding sands and binders sell for
as little as 10 to 15 cents a pound, and are often reusable?

Same thing with alloys. Scrap aluminum usually sells for about 1/4 the price
of high quality ingot, a difference of about 75 cents a pound. In a 10 pound
cylinder head you are investing an additional $7.50 per head to buy the
best.