Re: [ATM] working plate glass?

["Thomas Janstrom" <thomas@moiler.com>]

Hi Rob,

The first thing to remember is that plate glass is softer than Pyrex
type glasses. 

The other is that working MOT you have watch how much and how/where you
place your hand on the glass, as the heat from your hands will cause
problems if you don't try to keep that kinda random.

Cheers, Thomas.
www.tjanstrom.com
www.norsewines.com.au 

-----Original Message-----
From: atm-bounces@atmlist.net [mailto:atm-bounces@atmlist.net] On Behalf
Of Robert OToole
Sent: Thursday, 2 February 2006 9:56 PM
To: atm@atmlist.net
Subject: [ATM] working plate glass?

 I have a 11", 3/4" thick plte glass blank.  It was slumped to about
f/5.3
by Richard S. for me.  This will be my first foray into plate glass
grinding.  I've done a few smaller pyrex mirrors before.
 Are there any "best practice" rules of thumb for plate?
 How should I work it differently from pyrex?

  Given it is thin, and slumped, I would like to work MOT as much as
possible.
I'm making a full-size tile tool and plan to work it with a thin foam
rubber mat between my hands and the mirror.  I worry about heat from my
hands.
To work TOT, I will have to make a support somehow.

  Any other advice?

Thanks,
Rob


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