Judy Rohrbaugh on wed 14 mar 07
Well,I tested a base glaze that I use with rutile.
What I consider a fairly basic recipe, there is some zinc in it, cone 6 ox.
I like the addition of 18% rutile the best, no other colorants added. It is a soft orange,
peach/apricot/melon color with lighter gold-yellowish flecks running through it. Became somewhat mat.
Next I will try it on a pot and if I end up using it, I'll report.
To everyone who gave me advice, thanks.
Judy Rohrbaugh
Fine Art Stoneware
Ohio, USA
Judy Rohrbaugh on thu 15 mar 07
Glaze with rutile added, orange tones with lighter flecks, cone 5-6 (only tested once)
Feldspar 51
Silica 21
Whiting 24
Ball Clay 3
Zn Ox 12
Talc 12
Bentonite 1
______________
124
Rutile added: 18%
I have used this glaze for a long time, starting as a cone 9, have tweaked it a bunch.
So it adds up to way over 100.
This recipe now fires at cone 6 ox, or a high cone 5.
I generally use it as an accent glaze, with some cobalt and rutile, or copper and cobalt
and rutile.
If you test and get anything interesting, I'd like to know.
This glaze is finicky with application, I apply medium, too thick or thin and it comes out
varied. Also different temps, even in the same kiln load make for different results.
Judy Rohrbaugh
Fine Art Stoneware
Ohio, USA
amamenec@lineone.net on thu 15 mar 07
Sounds interesting. Can you post the recipe you used, and then we=20
could all try it and compare notes? Best Wishes,
Ama Menec, Totnes, Devon, UK.
>----Original Message----
>From: jrohrbaugh@SBCGLOBAL.NET
>Date: 14/03/2007 16:21=20
>To:
>Subj: results for rutile test
>
>Well,I tested a base glaze that I use with rutile.
> What I consider a fairly basic recipe, there is some zinc in it,=20
cone 6 ox.
>
> I like the addition of 18% rutile the best, no other colorants=20
added. It is a soft orange,
> peach/apricot/melon color with lighter gold-yellowish flecks=20
running through it. Became somewhat mat.
>
> Next I will try it on a pot and if I end up using it, I'll report.
> To everyone who gave me advice, thanks.
>
> Judy Rohrbaugh
> Fine Art Stoneware
> Ohio, USA
>
>__________________________________________________________________________=
____
>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=20
melpots@pclink.com.
>
___________________________________________________________
Tiscali Broadband only =C2=A39.99 a month for your first 3 months! http://w=
ww.tiscali.co.uk/products/broadband/
amamenec@lineone.net on fri 16 mar 07
I'll give it a try, any particular Feldspar? Soda or potash?
Ama Menec Totnes, Devon, UK.
>----Original Message----
>From: jrohrbaugh@SBCGLOBAL.NET
>Date: 16/03/2007 2:53=20
>To:
>Subj: Re: results for rutile test
>
>Glaze with rutile added, orange tones with lighter flecks, cone 5-6=20
(only tested once)
>
> Feldspar 51
> Silica 21
> Whiting 24
> Ball Clay 3
> Zn Ox 12
> Talc 12
> Bentonite 1
> ______________
> 124
>
> Rutile added: 18%
>
> I have used this glaze for a long time, starting as a cone 9, have=20
tweaked it a bunch.
> So it adds up to way over 100.
> This recipe now fires at cone 6 ox, or a high cone 5.
> I generally use it as an accent glaze, with some cobalt and rutile,=20
or copper and cobalt
> and rutile.
>
> If you test and get anything interesting, I'd like to know.
> This glaze is finicky with application, I apply medium, too thick=20
or thin and it comes out
> varied. Also different temps, even in the same kiln load make for=20
different results.
>
>
> Judy Rohrbaugh
> Fine Art Stoneware
> Ohio, USA
>
>__________________________________________________________________________=
____
>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=20
melpots@pclink.com.
>
___________________________________________________________
Tiscali Broadband only =C2=A39.99 a month for your first 3 months! http://w=
ww.tiscali.co.uk/products/broadband/
June Perry on sat 17 mar 07
Judy,
I ran your rutile glaze through my software and this glaze is too low in
alumina and silica for cone 6. It also has a some what high expansion and would
craze on some bodies.
I redid the recipe to fit cone 6 limits and brought it to 100%. This version
has a much better expansion as well. I kept the alumina/silica ratio the
same(11.04) So if you want to try it, here's the revised recipe:
JP's revised cone 6 rutile orange Expansion 6.83(your original is 7.69)
custer 31.6
silica 26.3
whiting 14.9
OM #4 12.2
zinc 7.5
talc 7.5
-----------------------
TOTAL 100
Add: bentonite 1%
This revised version is also cheaper (.16 Cents a lb as opposed to .21 cents
a lb for original).
Regards,
June
http://shambhalapottery.blogspot.com/
http://www.angelfire.com/art2/shambhalapottery
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Judy Rohrbaugh on sun 18 mar 07
Thank you, June.
Like some others have noted on the board, I did not receive your post in my mailbox,
had to find it in the archives. Sorry about the type. I have only tested this glaze
once for orange-tones with the 18% rutile. I also do not use it on functional
pots, and just at the rim as an accent. Although if I get it working in this
new color I may use it as the main color on a piece.
I have fired this glaze in different temp ranges wirh other colorants, from cone 5 to 6,
with different results.
Judy Rohrbaugh
Date: Sat, 17 Mar 2007 08:29:15 EDT From: June Perry Subject: Re: results for rutile test Judy, ...I ran your rutile glaze through my software and this glaze is too low in alumina and silica for cone 6. It also has a some what high expansion and would craze on some bodies....
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