Thread: Homemade castable refractory
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  #9  
Old 03-17-2003, 01:58 AM
PS_Bond PS_Bond is offline
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Some cat litters are also bentonite clay. I *think* it was a non-clumping variety that was labelled as bentonite in the fine print. Used it in DIY foundry sand.

Use the clean stuff...

Peter
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