MIE HAZAMA on fri 18 jun 99
Hello, clay arter!
I am preparing for long hard trip for crystalline glazes.
I would like to get the information about below.
Does someone give good advise for that?
1.I plan to buy electric kiln,and, I want to use porcelain clay.
But,many people who work porcelain in Japan say that electric kiln is
not good ,gas kiln is better for porcelain.
Because it is expensive to keep high temperature for making body hard.
Also, it's not suit for reduction fired,make kiln be damaged.
Is it true?
2.I plan to buy the front loading kiln ,inside dimensions 18",31",26"(H)
Is it too big for crystalline glaze?
3.I want to get the copy of the article about crystalline glazes,
Studio Potter,Dec 96 #25
Ceramic Techical,Nov96,#3
and others
I read the message that Dan Turnidge know his stuff ,and I want to
contact him by e-mail.
Does someone know it?
Thank you.
Mie Hazama
e-mail:hazama@aso.ne.jp
LeRoy Price on sat 19 jun 99
On Fri, 18 Jun 1999, MIE HAZAMA wrote:
> > ----------------------------Original message----------------------------
> > Hello, clay arter!
> >
> > I am preparing for long hard trip for crystalline glazes.
> >
> > I would like to get the information about below.
> >
> > Does someone give good advise for that?
> >
> >
> > 1.I plan to buy electric kiln,and, I want to use porcelain clay.
> > But,many people who work porcelain in Japan say that electric kiln is
> > not good ,gas kiln is better for porcelain.
> > Because it is expensive to keep high temperature for making body hard.
> > Also, it's not suit for reduction fired,make kiln be damaged.
> > Is it true?
I have used electric kilns for firing crystalline glazes for several
years. They work great. According to what I've read, electric kilns are
better than gas for this purpose since 1) the atmosphere is oxidizing and
2) it is easier to precisely control their temperature.
However, you must insure that your kiln will safely fire to the desired
temperature range. For me that's cone 10 to 12.
If electricity is very expensive in Japan, then maybe it is not a good
choice for you.
As for reduction, you probably will not want to reduce the glaze at its
highest temperature as that seems to greatly inhibit many types of crystal
growth, especially the large, zinc-silicate crystals. (However, for some
types of aventurine it may be a help). Reduction firing at very high
temperatures is very hard on the heating elements; but many people do it
anyway. Reduction firing at much lower temperatures (e.g. 800 degrees C)
seems to not particularly harm the elements.
> >
> > 2.I plan to buy the front loading kiln ,inside dimensions 18",31",26"(H)
> > Is it too big for crystalline glaze?
> >
> >
It depends upon what you want to do. My smallest kiln (that I use for
testing glazes) is about 18" x 18" x 18" inside. My largest kiln is
32" x 32" x 32". Both are used exclusively for crystalline glaze firing.
> >
> > Mie Hazama
> > e-mail:hazama@aso.ne.jp
> >
>
>
Ron Roy on sun 20 jun 99
Hi Mie,
Any kind of kiln will do fine - crystals develop during cooling so having
control over that aspect is most important - get an electric kiln with a
controller so you can slow down the cooling at the right times.
RR
>----------------------------Original message----------------------------
>Hello, clay arter!
>
>I am preparing for long hard trip for crystalline glazes.
>
>I would like to get the information about below.
>
>Does someone give good advise for that?
>
>
>1.I plan to buy electric kiln,and, I want to use porcelain clay.
>But,many people who work porcelain in Japan say that electric kiln is
>not good ,gas kiln is better for porcelain.
>Because it is expensive to keep high temperature for making body hard.
>Also, it's not suit for reduction fired,make kiln be damaged.
>Is it true?
>
>2.I plan to buy the front loading kiln ,inside dimensions 18",31",26"(H)
>Is it too big for crystalline glaze?
>
>
>3.I want to get the copy of the article about crystalline glazes,
>
> Studio Potter,Dec 96 #25
>
> Ceramic Techical,Nov96,#3
> and others
>
>I read the message that Dan Turnidge know his stuff ,and I want to
>contact him by e-mail.
>Does someone know it?
>
>Thank you.
>
>
>Mie Hazama
>e-mail:hazama@aso.ne.jp
Ron Roy
93 Pegasus Trail
Scarborough, Ontario
Canada M1G 3N8
Tel: 416-439-2621
Fax: 416-438-7849
Web page: http://digitalfire.com/education/people/ronroy.htm
D. Colo on wed 3 sep 03
Someday, I'd love to try crystalline glazes, but I
have no experience in working with them to date. I
may have an opportunity to get a larger kiln soon and
would like to be able to someday use it to do
crystalline glaze firings so I want to allow for that
possibility. (I know someone who is planning to sell
several used kilns from her shop, but have no details
on them at all.)
My question is, what kiln features are *necessary* to
do crystalline glazing and what features are
desirable? In other words, can I make-do with a
less-expensive model or is this something that's
definitely going to require a pricey, high-end kiln?
Is a computer controller more a convenience or a
necessity, etc. I doubt I can ever get a gas kiln set
up here, so this would be strictly referring to
*electric* kilns.
What kiln spec's do I need to know or what questions
should I ask (if I'm corresponding by phone/email with
the woman selling her kilns)?
I have already picked through many of the posts in the
archives on crystalline glazes, but didn't find a
whole lot on kiln spec's. ;)
Thanks.
Sue
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Arnold Howard on wed 3 sep 03
To fire crystalline glaze, you will need a kiln that can fire hot enough
and that has a digital controller. (You could even fire crystalline
glaze without a controller, but the controller saves a lot of time and
gives repeatable results.)
You don't have to spend a lot of money on such a kiln, either. You could
get a small test kiln if you can get by with firing only small pieces.
Sincerely,
Arnold Howard
Paragon Industries, L.P.
arnoldhoward@att.net
From: D. Colo
> My question is, what kiln features are *necessary* to
> do crystalline glazing and what features are
> desirable?
Fara Shimbo on thu 4 sep 03
Hi, Sue,
I have four kilns I do crystalline firing in: a little AIM 88
test kiln, a Skutt 818 without a controller, a Skutt 818 with one,
and an Olympic gas kiln (Torchbearer 2327). All four of them fire
beautifully.
I don't think the size of the kiln matters. The AIM does a
fine job on only one pot at a time.
I've heard a lot about controllers being absolutely necessary
for crystalline glazes. They help a lot, but you don't really
-need- one. For a beginner though they'll probably help a lot.
The one real drawback of electric kilns for crystalline firing
is element life. I got the gas kiln because I was spending
at least US$400 a year on new elements. Changing elements is
the most mind-numbingly tedious, boring and awful thing I can
think of to do, except filling out 1040 forms, or grooming a yak
with a pickle fork. You can get heavy-duty elements; problem
is they cost three times as much and only give you 30% more
firings, in my experience. All you kiln manufacturers out
there, PLEASE come up with, if nothing else, a quick-change
element system!
Other than that, all you need is a kiln that's rated for
cone 10 and off you go!
There's more info on kilns here:
http://crystalline-ceramics.info/firing.html
Or you could try the BBS and ask folks which kilns they
particularly like:
http://crystalline-ceramics.info/bbs/index.cgi
Hang in there,
Fa
--
===========================================================
Fara Shimbo, Master Crystalliere, Certified Public Nuisance
-----------------------------------------------------------
www.crystalline-ceramics.info www.shimbopottery.com
Shimbo Pottery, P.O. Box 41, Hygiene, Colorado 80533 USA
Studio: 720.272.0442 7AM to 2 PM, Mountain Time
Silly Science Fiction: http://klysadel.net
===========================================================
william schran on thu 4 sep 03
Sue asked: >My question is, what kiln features are *necessary* to
do crystalline glazing and what features are
desirable?<
The simple answer is that any kiln capable of reaching the required
temperature will work. Kilns with low/med/hi controls will require
careful watching and changes to switch positions often during the
holding phase until you can figure out what the optimum settings
should be. Kilns with infinite controls are a bit easier as you'll
have finer control over the setting. This is the type I use and after
a few firings I was able to set the kiln (switch settings - bottom M,
middle M 1/2, top 3 1/2) to hold a constant temperature. The most
desirable would be a kiln with a programmable controller.
Bill
Ellie Blair on thu 4 sep 03
It really depends on if you want to fire to ^6 or ^9-10. I do crystallin=
e glazes and I fire to cone 10. You can also do crystalline at cone 6 so=
that would be your first decision. If you fire at cone 10 you will have=
to replace the elements sooner so I would suggest making sure you have t=
he proper elements. My kiln is a Skutt 2710 with a digital controller. =
Even though it isn't a have to have feature it makes the firing easier t=
o monitor. I still use cones to make sure I am getting to temp. There a=
re several good kiln makers out there. It is going to be your personal p=
reference and finances. You have a nice variety to choose from. Also if=
you are firing to cone 10 make sure you have 3" firebrick. It is import=
ant to have the correct amount of insulation when firing to such a high t=
emp. Also make sure you can vent your kiln if you are going to have it i=
nside. If you are firing to cone 6 you may be able to get by cheaper but=
I wouldn't want to cut corners =20
when firing a kiln to cone 10. Hope this helps some.
Ellie Blair
Blair Pottery
Lawrence, Kansas 66047
----- Original Message -----
From: D. Colo
Sent: Wednesday, September 03, 2003 2:54 PM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Kiln for crystalline glazes
Someday, I'd love to try crystalline glazes, but I
have no experience in working with them to date. I
may have an opportunity to get a larger kiln soon and
would like to be able to someday use it to do
crystalline glaze firings so I want to allow for that
possibility. (I know someone who is planning to sell
several used kilns from her shop, but have no details
on them at all.)
My question is, what kiln features are *necessary* to
do crystalline glazing and what features are
desirable? In other words, can I make-do with a
less-expensive model or is this something that's
definitely going to require a pricey, high-end kiln?
Is a computer controller more a convenience or a
necessity, etc. I doubt I can ever get a gas kiln set
up here, so this would be strictly referring to
*electric* kilns.
What kiln spec's do I need to know or what questions
should I ask (if I'm corresponding by phone/email with
the woman selling her kilns)?
I have already picked through many of the posts in the
archives on crystalline glazes, but didn't find a
whole lot on kiln spec's. ;)
Thanks.
Sue
__________________________________
Do you Yahoo!?
Yahoo! SiteBuilder - Free, easy-to-use web site design software
http://sitebuilder.yahoo.com
_________________________________________________________________________=
_____
Send postings to clayart@lsv.ceramics.org
You may look at the archives for the list or change your subscription
settings from http://www.ceramics.org/clayart/
Moderator of the list is Mel Jacobson who may be reached at melpots@pclin=
k.com.
Ilene Mahler on thu 4 sep 03
the best set up is a digital kiln as you really have to sit by the kiln if
you don't have one..Ilene in Conn
----- Original Message -----
From: "D. Colo"
To:
Sent: Wednesday, September 03, 2003 2:54 PM
Subject: Kiln for crystalline glazes
> Someday, I'd love to try crystalline glazes, but I
> have no experience in working with them to date. I
> may have an opportunity to get a larger kiln soon and
> would like to be able to someday use it to do
> crystalline glaze firings so I want to allow for that
> possibility. (I know someone who is planning to sell
> several used kilns from her shop, but have no details
> on them at all.)
>
> My question is, what kiln features are *necessary* to
> do crystalline glazing and what features are
> desirable? In other words, can I make-do with a
> less-expensive model or is this something that's
> definitely going to require a pricey, high-end kiln?
> Is a computer controller more a convenience or a
> necessity, etc. I doubt I can ever get a gas kiln set
> up here, so this would be strictly referring to
> *electric* kilns.
>
> What kiln spec's do I need to know or what questions
> should I ask (if I'm corresponding by phone/email with
> the woman selling her kilns)?
>
> I have already picked through many of the posts in the
> archives on crystalline glazes, but didn't find a
> whole lot on kiln spec's. ;)
>
> Thanks.
> Sue
>
>
>
> __________________________________
> Do you Yahoo!?
> Yahoo! SiteBuilder - Free, easy-to-use web site design software
> http://sitebuilder.yahoo.com
>
>
____________________________________________________________________________
__
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
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