Lynda Jones on sun 29 mar 98
Is it likely that the fluxes in a clay body could influence a glaze
enough to cause it to melt at a lower temperature than it was formulated
to do?
I had a beautiful cone 6 glaze that worked with my old clay body. I
changed to a new clay body and this same glaze ran all over my kiln
shelves (I only fired it to cone 5). All 30 pieces in the kiln stuck to
the shelves! Both clay bodies are commercial ones so I have no idea what
is in them.
Thanks for any help.
Lynda from Pillar Lake in B.C. where I'm having a bad kiln day.
David Hewitt on tue 31 mar 98
In message , Lynda Jones writes
>----------------------------Original message----------------------------
>Is it likely that the fluxes in a clay body could influence a glaze
>enough to cause it to melt at a lower temperature than it was formulated
>to do?
I have not come across such a drastic change from using a different clay
myself but, just to clarify one point, when you say the 'same glaze',
was this from the same mix of that glaze or a new mix? As the glaze has
worked for you before, I would make a small quantity of a new mix of the
recipe and try this on a test tile.
Have you used any other of your recipes on this clay?
David
>
>I had a beautiful cone 6 glaze that worked with my old clay body. I
>changed to a new clay body and this same glaze ran all over my kiln
>shelves (I only fired it to cone 5). All 30 pieces in the kiln stuck to
>the shelves! Both clay bodies are commercial ones so I have no idea what
>is in them.
>
>Thanks for any help.
>
>Lynda from Pillar Lake in B.C. where I'm having a bad kiln day.
>
--
David Hewitt
David Hewitt Pottery ,
7 Fairfield Road, Caerleon, Newport,
South Wales, NP6 1DQ, UK. Tel:- +44 (0) 1633 420647
Own Web site http://www.dhpot.demon.co.uk
IMC Web site http://digitalfire.com/education/people/hewitt.htm
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