Monona Rossol on thu 13 aug 98
---------- Forwarded message ----------
Date: Wed, 12 Aug 1998 08:40:05 EDT
From: marie elaine
To: CLAYART@LSV.UKY.EDU
Subject: Mugs and Manganese
----------------------------Original message----------------------------
A favorite glaze of mine has manganese in it and I would like to use this
on the outside wall of mugs with a food safe non-toxic glaze as the liner.
Will the temperature of the liquid encourage leaching of the exterior
glaze? Would the thickness of the wall deter this possibility? Help again!
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The only glazes that are a leaching problem when used on the outside
of the ware are those that contain ingredients that fume all over the kiln
during firing. Examples are lead and chrome. These can put out enough
fume to settle throughout the kiln including on the insides of ware.
Monona
Arts, Crafts and Theater Safety
181 Thompson St., # 23
New York NY 10012-2586 212/777-0062
http://www.caseweb.com/acts/
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