Kathy McDonald on mon 23 jan 06
I have been using the same glaze on cone 6 red clay (Plainsman M390),
These results are preliminary so may not work for everyone.
I have been applying the glaze with a brush to bone dry ware,
letting it dry completely (sometimes takes 48-60 hours)
then bisque firing to cone 04.
After the biscuit firing I apply the decorative color glazes
mixed with a bit of glycerine and laundry starch.
Ware is then refired to c6 ox slowly with a 15 min soak at top temp.
The results have been really promising thus far.
Color response with mason stains and with Mayco Stroke and
Coat glaze has been really good.
Very few if any pinholes that sometimes charcterize this technique.
Kathy
I
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG]On Behalf Of Keith Arbogast
Sent: Monday, January 23, 2006 8:29 AM
To: CLAYART@LSV.CERAMICS.ORG
Subject: ^6 glaze looking drippy
Hi Ron,
My wife and I are having the same problem. Naomi's description is
identical to our results. We are using what we call 'H & R Majolica'
from your book. We add 1% bentonite to combat the powderyness of the
nepheline syenite, 1% CMC to harden the surface and 11% Mason stain
6406 (buttercup). (The surface is still powdery, so we will try 2% in
the next batch. If there's something more we can do we would be glad to
know. The powderyness makes handling the ware, and painting on top of
the glaze difficult.) My wife judges the thickness of the glaze slop
by seeing how it rolls off her fingernail, and by sloshing her hand
around in the bucket to test how it feels. We are using the glaze on a
white firing clay, Amaco M38, which we bisque to cone 06. When we have
bisqued to cone 04, we find it is harder to get the ware to absorb
enough glaze. We dip dry pots into a bucket of glaze sideways, and
roll them around their axis, so the inside and outside are glazed
simultaneously. We fire with cones, but pay more strict attention to
them on glaze firing than bisque. We put a higher bar cone in the kiln
sitter than the cone we are firing to.
I would like to add that we are grateful for all the research you,
John Hesselberth, and others have done on cone 6 glazes. It has been a
tremendous help to us.
With best wishes,
Keith Arbogast
Bloomington, IN
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