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Re: [teacherartexchange] Glaze Firing with Cracking

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From: trish ackerman (dacke8175_at_TeacherArtExchange)
Date: Fri Oct 10 2008 - 15:51:02 PDT

Hi Angela,
I have had things crack if I open the kiln too early before its cooled down. Could this have been the problem?

Trish Ackerman
http://artisticjourneys-trish.blogspot.com/
 Core Knowledge Charter School Middle School Art,Parker, Colorado  

--- On Fri, 10/10/08, Angela Davidson <addartistic@msn.com> wrote:
From: Angela Davidson <addartistic@msn.com>
Subject: [teacherartexchange] Glaze Firing with Cracking
To: "TeacherArtExchange Discussion Group" <teacherartexchange@lists.pub.getty.edu>
Date: Friday, October 10, 2008, 4:15 PM

I just did a glaze firing and I experienced a tile project that cracked and
one that broke in half. I have the option on my kiln to do a fast glaze - 5
hours or a slow glaze cycle - about 7 hours. My thought is that the
fast glaze heated up to fast and caused the cracking. Does anyone have some
thoughts of why this happened?

Angela in Iowa 

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