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Re: [ATM] All about hydrostone tools
Hydrostone, Hydrocal and dental stone are not considered by the industry to
be waterproof materials because the water readily enters the material and,
when freezing of the water happens, the material can be shattered by
freezing of the water in the stone.
Bob May
bobmay@nethere.com
http://nav.to/bobmay
http://bobmay.astronomy.net
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