From: "Russell Jocoy" 
To: aolsen{at}prairienet.org, atm{at}shore.net
Reply-To: "Russell Jocoy" 






>From: Aart Olsen 
>Reply-To: Aart Olsen 
>To: atm{at}shore.net
>Subject: ATM Dental stone & tile tool question
>Date: Tue, 04 Feb 2003 18:54:32 -0600
>
>
>Do grooves have to be dug in between the tiles of a dental stone tool?
>My tiles didn't line up too nicely and it was hard to do this
>channeling, so I left the dental stone flush with the tile surface.
>During grinding I notice that shallow channels form by themselves
>because the dental stone is softer than the tiles, and it actually seems
>a good idea to have the edges of the tile supported higher up so they
>don't fracture.  Grinding through the grades seems to be going well.
>What's so bad about leaving the dental stone unchanneled like this?
>Does it cause edge problems or produce scratches?
>--
>Aart Olsen
>aolsen{at}prairienet.org
("atm{at}shore.net")

\  Aart, the reason for the channels is to keep the tiles in contact with
the glass while grinding.
     I don't think dental stone will harm the glass during the grinding
process until you get to finer
micron grits. You are basically using a solid tool if the surface of the
tiles is the same as the dental
stone. You may have a problem of having the tool stick to the mirror since
no air or water can release
through channels between the tiles. I have no experience here, I have never
tried this.. anybody got
a view on this???                  RUSS JOCOY..
("atm{at}shore.net")

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