Heather Forward on wed 3 jul 96
I have been using a three firing system (bisque, glaze and on-glaze)
in the production of decorated white glazed terracotta - looks like
majolica. I would like to raw glaze the white (zircon white fritted
commercial glaze) to reduce handling. All attempts to apply water based
glaze have been disappointing. Water weakens piece, glaze crawls or effects
colour. I feel a non-water based glaze may be the answer. Has anyone out
there any any experience of this idea or heard of anything similar being
used by potters, teaching institutions or industry. Peter C/- H.Forward.
Geelong , Australia
Answers welcome direct or dissussion group.
Dennis Whitfield on thu 4 jul 96
>----------------------------Original message----------------------------
> I have been using a three firing system (bisque, glaze and on-glaze)
>in the production of decorated white glazed terracotta - looks like
>majolica. I would like to raw glaze the white (zircon white fritted
>commercial glaze) to reduce handling. All attempts to apply water based
>glaze have been disappointing. Water weakens piece, glaze crawls or effects
>colour. I feel a non-water based glaze may be the answer. Has anyone out
>there any any experience of this idea or heard of anything similar being
>used by potters, teaching institutions or industry. Peter C/- H.Forward.
>Geelong , Australia
> Answers welcome direct or dissussion group.
>
>
Peter,
I have heard of (but not tried) the following which is a diluted gel of
aluminium stearate and napthenate in mineral turpentine.
Typically (I hear) 0.85%w/v aluminium stearate and 0.15%w/v aluminium
napthante in mineral turpentine. Heat the mixture on an electric hotplate at
70 - 100 degrees C until a transparent gel forms.
I suggest you contact Mr Phillip Robinson, 2 Glenmore Street, MUDGEE NSW
2850 as he is the source of the information I have given you here.
I could not answer a single additional question on the topic but would be
very interested to learn more. Please keep me informed.
Hope this is the start of something useful.
Denis
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DR DENIS WHITFIELD
Senior Lecturer
Co Director, Centre for Ceramic Research, Design and Production
Department of Visual and Peforming Arts
University of Western Sydney, Macarthur
PO Box 555
CAMPBELLTOWN NSW 2560
AUSTRALIA
email: d.whitfield@uws.edu.au
phone: 02 7729345
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