RE: [ATM] Making glass blanks.

["Timm Simpkins" <poduck@poducksworld.com>]

-----Original Message-----
From: atm-bounces@atmlist.net [mailto:atm-bounces@atmlist.net] On Behalf Of
Michael Lindner
Sent: Friday, May 14, 2004 10:13 AM
To: Leftfieldstar@aol.com; atm@atmlist.net
Subject: Re: [ATM] Making glass blanks.

>Can such an oven hold temps steady that long? My impression was that they
>were poorly insulated (or is that part of the modification)?

Actually self cleaning ovens are very well insulated.  If they weren't,
stuff might melt.  Imagine leaving an aluminum pot on top of a stove that
reached a temperature of 1100 degrees.  Aluminum's melting point is around
750 degrees.  You would have pot soup all over the stovetop, much less the
fire hazzard.

Self cleaning ovens are insulated much like some annealers are, with ceramic
fiber batting.  This is a very good insulator.  In an annealing oven, you
don't want too thick of insulation anyway.  If it's too thick, it will
prevent the temperature from lowering as fast as it needs to for some parts
of the process.


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