Re: [ATM] Dental stone for tool

["Jean-Marc Becker" <jmb-abonnements@wanadoo.fr>]

>
> I'm going to be making a tile tool soon, I have contacted a local 
> dental supplier and have a couple
> of questions about what they told me.
>
> They said they have a plaster called Crystalcal which I presume is 
> just a fairly standard plaster
> of paris and would need covering with epoxy.
>
For my own, I use white fine concrete, as found in do it yourself 
stores, ready for use. After pouring, molded on a form, and once cured 
during two days, I dry it in the oven at low temperature. I carefully 
remove all friable parts, and two layers of polyuréthane varnish give 
the ultimate security.
I now have a lot of cncrete discs, ready to be used as grinding tools 
with epoxied tiles, or polishing tools with pitch. I like these tools 
for their wheigt and consistancy.

JMB 



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