Jonathan Kaplan on tue 6 oct 98
Been reading some posts lately on pots that leave parts of their feet or
the entire foot on the kiln shelf, regarless of atmosphere, temperature,
kiln shelf style and compostion, etc. etc.
While this method certainly won't avoid making kiln wash with mislabled
materials containers, it has worked for us, in a factory situation as well
as in a production one. Its simple, if you use melted parafin, add a scoop
or so of alumina hydrate to your hot wax. Keep the mixture stirred
occassionally.
By the way, not only does this work for us and has for many, many years,
but I have never washed my kiln shelves, nor do I intend to. In fact, the
shelves in our car kiln currently are the same shelves purchased in 1981.
Still flat, still unblemished, still as good as new.
Jonathan
Jonathan Kaplan, president jonathan@csn.net
http://www.sni.net/ceramicdesign/
Ceramic Design Group Ltd./Production Services
PO Box 775112
Steamboat Springs CO 80477
(USPS deliveries only)
Plant Location
1280 13th Street Unit 13
Steamboat Springs CO 80487
( UPS, courier, and common carrier deliveries)
(970) 879-9139*voice and fax
http://www.sni.net/ceramicdesign/
http://digitalfire.com/education/clay/kaplan1.htm
douglas gray on wed 7 oct 98
Jonathan makes a good point about adding alumina hydrate to the wax, but I
thought I' add another side comment about the shape of the foot ring, or more
particularly the surface of the foot that actually comes into contact with the
self.
I've found that if I round the foot while I'm trimming rather than leaving it
flat and square sided, there is less clay that actually comes into contact with
the shelf during firing. Consequently I have less instances where even the bare
clay fuses slightly to the shelf (not talking about glaze runs here).
I started to reshape the feet on porcelain items and it worked well enough that
I now just do most of my feet that way.
doug
============================================================================ =)
Douglas E. Gray, Assistant Professor of Art
P.O. Box 100547
Department of Fine Arts and Mass Communication
Francis Marion University
Florence, South Carolina 29501-0547
dgray@fmarion.edu
843/661-1535
Kathi LeSueur on wed 7 oct 98
In a message dated 10/6/98 12:41:22 PM, you wrote:
>Its simple, if you use melted parafin, add a scoop
>or so of alumina hydrate to your hot wax. Keep the mixture stirred
>occassionally.
I've used this method also and swear by it.
Kathi LeSueur
paul on wed 7 oct 98
Dear Jonathan,
Excellent suggestion - try silica - it will also work and it is much less
expensive! This works in salt also!!
regards - Paul Wilmoth
-----Original Message-----
From: Jonathan Kaplan
To: CLAYART@LSV.UKY.EDU
Date: Tuesday, October 06, 1998 8:41 AM
Subject: waxing and sticking feet
----------------------------Original message----------------------------
Been reading some posts lately on pots that leave parts of their feet or
the entire foot on the kiln shelf, regarless of atmosphere, temperature,
kiln shelf style and compostion, etc. etc.
While this method certainly won't avoid making kiln wash with mislabled
materials containers, it has worked for us, in a factory situation as well
as in a production one. Its simple, if you use melted parafin, add a scoop
or so of alumina hydrate to your hot wax. Keep the mixture stirred
occassionally.
By the way, not only does this work for us and has for many, many years,
but I have never washed my kiln shelves, nor do I intend to. In fact, the
shelves in our car kiln currently are the same shelves purchased in 1981.
Still flat, still unblemished, still as good as new.
Jonathan
Jonathan Kaplan, president jonathan@csn.net
http://www.sni.net/ceramicdesign/
Ceramic Design Group Ltd./Production Services
PO Box 775112
Steamboat Springs CO 80477
(USPS deliveries only)
Plant Location
1280 13th Street Unit 13
Steamboat Springs CO 80487
( UPS, courier, and common carrier deliveries)
(970) 879-9139*voice and fax
http://www.sni.net/ceramicdesign/
http://digitalfire.com/education/clay/kaplan1.htm
Caryl W. on fri 9 oct 98
Its simple, if you use melted parafin, add a scoop
>or so of alumina hydrate to your hot wax. Keep the mixture stirred
>occassionally.
>
>
I use wax resist with a bit of alumina hydrate added to coat the galleys
of pots before putting the lid on to fire in place. I find the lids just
pop right off.Ever since I started doing this, no more broken pots or
lids when you try to remove them after firing!!
Caryl
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