Yann Ferric on sat 10 nov 01
Hi
I think I deleted my last message so writing it again, oops :p.
Does anyone know if it is possible to fire crystalline glazes with gas
firing? I presently use an oil drum (propane) kiln for Raku as a hobby.
It can reach stoneware temperatures (1300c on a good day). Do I need to use
an electric kiln to produce crystalline glazes, or is it possible to create
enough of an oxidizing atmosphere(is oxidising atmosph essential?) in a gas
one to do the job?
Can anyone recommend any web-sites with information on this, also firing
cycles and glaze recipies/formulas? I will be making a new kiln next year,
and would like to be able to experiment in this area with it, so I'm open to
any suggestions about the best design, especially if it needs to be an
electric one (I hope not as the bills get a bit steep, lol).
Thanks for reading my query :)
Happy mud slinging, hehe,
Yann
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De ruyter jean on sat 10 nov 01
Hello Yan
yes You can it is what I do;
I am using a El and a gas kiln.
The only burden is that with the control equipment of the EL kiln
it is no time consuming.
With a gas kiln you have to run the kiln yourself this can be
a real time consuming job
specially if you want to have a cooling cycles that represent
different up and down temperatures.
The other point of coarse is to avoid reduction.
My experience is that a slight reduction at the end
of the heating cycles is not destroying the crystals.
Crystals are very versatile f.e. in my latest woodfiring I was
using my crystal glazes even that the firing was I a aggressive reduction
there where some crystals on a few pots.
I explain this; the reduction atmosphere in a kiln is not homogenous
and depends on the design of the kiln.
Anyhow I never use my woodfiring kiln for crystals this was a nice unwilling
experience.
But in a gas kiln the results are very good.
If you give me your mail address I send you some photographs
Jan
----- Original Message -----
From: "Yann Ferric"
To:
Sent: Saturday, November 10, 2001 6:20 AM
Subject: crystalline glaze gas firing 2 oops
> Hi
>
> I think I deleted my last message so writing it again, oops :p.
>
> Does anyone know if it is possible to fire crystalline glazes with gas
> firing? I presently use an oil drum (propane) kiln for Raku as a hobby.
> It can reach stoneware temperatures (1300c on a good day). Do I need to
use
> an electric kiln to produce crystalline glazes, or is it possible to
create
> enough of an oxidizing atmosphere(is oxidising atmosph essential?) in a
gas
> one to do the job?
> Can anyone recommend any web-sites with information on this, also firing
> cycles and glaze recipies/formulas? I will be making a new kiln next year,
> and would like to be able to experiment in this area with it, so I'm open
to
> any suggestions about the best design, especially if it needs to be an
> electric one (I hope not as the bills get a bit steep, lol).
>
> Thanks for reading my query :)
>
> Happy mud slinging, hehe,
>
> Yann
>
>
> _________________________________________________________________
> Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp
>
>
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> Send postings to clayart@lsv.ceramics.org
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> You may look at the archives for the list or change your subscription
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melpots@pclink.com.
>
Cheryl K Hanley on sun 11 nov 01
Yes crystal glazes can be created in a reduction firing. It is difficult
but the reduction has to be done after you reach temp. Also after your
soak time is finished is when you start to reduce. If you would like
more information just e-mail me and I can send you some photos of
reduction crystalline pots.
Cheryl
littlecreekpotter@juno.com
On Sat, 10 Nov 2001 05:20:57 +0000 Yann Ferric
writes:
> Hi
>
> I think I deleted my last message so writing it again, oops :p.
>
> Does anyone know if it is possible to fire crystalline glazes with
> gas
> firing? I presently use an oil drum (propane) kiln for Raku as a
> hobby.
> It can reach stoneware temperatures (1300c on a good day). Do I need
> to use
> an electric kiln to produce crystalline glazes, or is it possible to
> create
> enough of an oxidizing atmosphere(is oxidising atmosph essential?)
> in a gas
> one to do the job?
> Can anyone recommend any web-sites with information on this, also
> firing
> cycles and glaze recipies/formulas? I will be making a new kiln next
> year,
> and would like to be able to experiment in this area with it, so I'm
> open to
> any suggestions about the best design, especially if it needs to be
> an
> electric one (I hope not as the bills get a bit steep, lol).
>
> Thanks for reading my query :)
>
> Happy mud slinging, hehe,
>
> Yann
>
>
> _________________________________________________________________
> Get your FREE download of MSN Explorer at
> http://explorer.msn.com/intl.asp
>
>
_________________________________________________________________________
_____
> 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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