james & becca sydnor on fri 2 may 97
We are having trouble with a losing shelves in a salt kiln. We have
been using just the standard shelves and really can't afford the silica
carbide shelves. I was wondering if anyone has used the high alumina
shelves and/or any coating for standard shelves that could help with
this incredible shelf eating kiln. We will be makin a shelf order soon
so any help would be great.
Charlotte Green on sat 3 may 97
High alumina is better than what you are using but I'd go for the carbide and
save in the long run.
Char
"Rafael Molina-Rodriguez (Rafael Molina-Rodriguez)" on sun 4 may 97
Jim :
I recently spoke with Mark Epstein, a local potter here in Dallas, about this
same subject. According to him a cordierite shelf like the Thorley's you
use can be used in salt/soda as long as they're coated with ITC. In light
of the recent Nils Lou lecture at NCECA, perhaps someone else on the
list might have more info.
I'm still a little skeptical. Pat Chesney down in Elm Mott used Thorley
shelves in his salt kiln and had severe deterioration. I'm not sure if they
were coated with ITC.
As for myself, I think I'll stick with the silicon carbide shelves for the soda
kiln I built here at the college. I know they're expensive, but I guess I'll
just have to order only one or two every fiscal year.
Rafael
rmr3431@dcccd.edu
>>> james & becca sydnor 05/02/97 06:05am >>>
----------------------------Original message----------------------------
We are having trouble with a losing shelves in a salt kiln. We have
been using just the standard shelves and really can't afford the silica
carbide shelves. I was wondering if anyone has used the high alumina
shelves and/or any coating for standard shelves that could help with
this incredible shelf eating kiln. We will be makin a shelf order soon
so any help would be great.
JOE BENNION on sun 4 may 97
James and Becca,
I've posted this advice here before. Here it is again. My experience
with high alumina shelves in salt was NOT good. After few (8-10) firings the
suraces had glazed over and became a real problem. Their useful life is much
shorter than silicon carbide. My advice is to invest in thick silicon carbide
and enjoy your work in salt glazing.
Good Luck, Joe the Potter
RJMOORE2 on wed 7 may 97
Hey Joe,
When you say thick, does 1/2 inch or 3/4 inch appply. Aprox. how
many firings should those thicknesses hold up?
rjmoore
rjmoore2@iusmail.ius.indiana.edu
______________________________ Reply Separator _________________________________
Subject: Re- Salt Shelves
Author: Ceramic Arts Discussion List at SMTP-Gateway
Date: 5/5/97 5:42 PM
----------------------------Original message----------------------------
James and Becca,
I've posted this advice here before. Here it is again. My experience
with high alumina shelves in salt was NOT good. After few (8-10) firings the
suraces had glazed over and became a real problem. Their useful life is much
shorter than silicon carbide. My advice is to invest in thick silicon carbide
and enjoy your work in salt glazing.
Good Luck, Joe the Potter
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