Re: [ATM] Dental Stone Tool

["Bob May" <bobmay@nethere.com>]

If you glue the tiles onto the tool, you need to keep at the
edges of the tiles to keep them from chipping.  Embedding the
tiles into the tool allows for the support of the edges of the
tiles so that they don't chip.
In addition, the tile tool shouldn't be made until you have the
hole dug out of the mirror to something close to the depth that
the surface needs to be.

                YOU CANNOT DIG THE HOLE WITH A TILE TOOL!!!

To do so wears the tiles excessively and you often wear the tiels
down to where they need to be replaced, usually somewhere in the
fine grinding when they start wearing through.
If you're doing something like a F20 or longer mirror in the
usuall small sizes, you can start with the tile tool but
otherwise, the wear is too great.
Bob May
bobmay at nethere.com
http: slash /nav.to slash bobmay
http: slash /bobmay dot astronomy.net
Addresses have been munged up to keep spammers from bothering me.
replace the obvious words with the proper character.
Thank you for your understanding!

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