My guess would be the stacking, weight and moving them. I had a
kindergarten teacher do that with some slab pieces tht she wanted fired and
they all cracked during the moving while stacked.
----- Original Message -----
From: "Cathy Thomas" <jtktkt@flash.net>
To: "ArtsEdNet Talk" <artsednet@lists.pub.getty.edu>
Sent: Tuesday, January 22, 2002 6:49 PM
Subject: Cracking clay
> I have my 4th grade students making ceramic clay facades. They used new
> white clay that I cut with wire. They put the cut square clay on a white
> board and used 1/2" guide sticks and rolling pin to make a slab. The
> students then used their pattern and cut out the clay building shape. They
> also used wooden blocks to press into the clay to make windows, doors,
> texture etc. I stacked the projects three high while still keeping them
> on the boards. I covered the clay facades with plastic. As they were
> drying they started to crack and separate. Can someone tell me what went
> wrong? Any sugesstions would be appreciated.
> Thanks, Cathy
>
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