Re: ATM large thin mirror grinding with tiles

["Bill T." <twentiethwave@hotmail.com>]

>What about porcelian tiles? Are they too hard ? Has anyone used them before
>to grind with??

1" hex or square porcelain tiles work great for grinding.  They are 
high-fired and have the same texture and consistency all the way through, 
and they're pretty hard.   I am partial to the hex variety.

http://www.crafthome.com/subsidiarypages/hextiles/whitehextiles.htm

You can also get them from Willmann-Bell, or by special order from your 
local tile store.

http://www.kupercontrols.com/tiletool.htm

I don't bother to open up the channels anymore.

~2 square feet is more than enough for a 16", that's ~$8 worth.

I think that the hex tiles available from Willmann-Bell show much less 
tendency to chip than the bathroom variety, so they may be worth the higher 
price.

Bill T.

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