tomsawyer on tue 12 jun 01
Claybuds,
I have just about completed my transition from cone 10 to cone 6 after =
several months of testing. I have some cone 10 glazes, however, that I =
hate to leave behind. Two that I particularly have enjoyed have been the =
following:
=20
Reitz Green
Pete Pinnell's workshop 5 March, 1999
neph sy 70
whiting 5
gerstley borate 2
petalite 15
kaolin 8
add:
cobalt carb. 1
rutile 2
Val Cushing's Fake Ash AA Blue Green, Taffy & Blue
Cornwall Stone 46
Whiting 34
EPK 20
If anyone can help in the transformation of these cone 9-10 glazes to =
cone 5-6, I am in your debt. thanks
Tom Sawyer
tsawyer@cfl.rr.com
Celia Littlecreek on tue 12 jun 01
There are several software programs out there that you can buy, I think they
are pretty spendy. You might ask Ron Roy, I think he subscribes to our
list. He might be willing to help you with this for a small fee. He is a
glaze Guru.I don't know his email address, but he may see your message.
Good luck.
----- Original Message -----
From: "tomsawyer"
To:
Sent: Tuesday, June 12, 2001 5:11 PM
Subject: Cone 10 Glazes to Cone 5-6
Claybuds,
I have just about completed my transition from cone 10 to cone 6 after
several months of testing. I have some cone 10 glazes, however, that I hate
to leave behind. Two that I particularly have enjoyed have been the
following:
Reitz Green
Pete Pinnell's workshop 5 March, 1999
neph sy 70
whiting 5
gerstley borate 2
petalite 15
kaolin 8
add:
cobalt carb. 1
rutile 2
Val Cushing's Fake Ash AA Blue Green, Taffy & Blue
Cornwall Stone 46
Whiting 34
EPK 20
If anyone can help in the transformation of these cone 9-10 glazes to cone
5-6, I am in your debt. thanks
Tom Sawyer
tsawyer@cfl.rr.com
____________________________________________________________________________
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Lorraine Pierce on tue 12 jun 01
Tom there is a chapter in Val Cushing's Handbook, p.55 entitled Conversion
of a ^9 glaze to a ^6 glaze.Lists eight alternatives. These are simple to
do, no computer program involved, just testing.
The first suggestion is to change the feldspar to Nepheline Syenite,( not
possible with your glazes).. Other suggestions follow adding 10-30 percent
of one of the following Ferro frits, 3124,3134,3185,CC 257-2, in increments
of 5% starting at 10%; add to the existing 100%. ( Or the same with the
gerstley borate). I expect you will soon have totally 'new' adapted
glazes by those gerus with the right computer savvy, and with less testing
also, but I thought this was an interesting solution.
I would like to hear the results of your conversions since I am on the fence
about this change for myself, to ^6 reduction. Have you changed your clay
body as well, or have you been using one with a wide firing range?
Lori Pierce in New Port Richey, Fl.
Ababi on wed 13 jun 01
Until a year ago they used to say, replace the potash feldspar with nephalyn
Syanite (not sure about spelling) and add 10% gerstly borate. If you want to
try it with one of the substitutes, you should use one with the most similar
analysis to the original one. Besides, try your recipes as they are, you
might find that some of them work in ^6 or lower. I do not promise, try!
Ababi Sharon
ababisha@shoval.ardom.co.il
http://members4.clubphoto.com/ababi306910/
http://www.milkywayceramics.com/cgallery/asharon.htm
----- Original Message -----
From: "Celia Littlecreek"
To:
Sent: Wednesday, June 13, 2001 1:01 AM
Subject: Re: Cone 10 Glazes to Cone 5-6
> There are several software programs out there that you can buy, I think
they
> are pretty spendy. You might ask Ron Roy, I think he subscribes to our
> list. He might be willing to help you with this for a small fee. He is a
> glaze Guru.I don't know his email address, but he may see your message.
> Good luck.
>
> ----- Original Message -----
> From: "tomsawyer"
> To:
> Sent: Tuesday, June 12, 2001 5:11 PM
> Subject: Cone 10 Glazes to Cone 5-6
>
>
> Claybuds,
> I have just about completed my transition from cone 10 to cone 6 after
> several months of testing. I have some cone 10 glazes, however, that I
hate
> to leave behind. Two that I particularly have enjoyed have been the
> following:
>
>
> Reitz Green
> Pete Pinnell's workshop 5 March, 1999
>
> neph sy 70
>
> whiting 5
>
> gerstley borate 2
>
> petalite 15
>
> kaolin 8
>
> add:
>
> cobalt carb. 1
>
> rutile 2
>
> Val Cushing's Fake Ash AA Blue Green, Taffy & Blue
> Cornwall Stone 46
>
> Whiting 34
>
> EPK 20
>
> If anyone can help in the transformation of these cone 9-10 glazes to cone
> 5-6, I am in your debt. thanks
>
> Tom Sawyer
>
> tsawyer@cfl.rr.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.
>
>
____________________________________________________________________________
__
> 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.
>
tomsawyer on wed 13 jun 01
Lorraine,
I have Cushings book and took several of my cone 10 glazes and added 20%
Boraq and 20% 3134; a few came out acceptable but none with the same
"verve". Of course, I fired in my electric rather than in my gas kiln which
was temporarily down at the time. I have access to Ron Roy who has been kind
enough to help on a couple of occasions. Ron is an Axner consultant and I
have ready access but I am reluctant to take advantage of his kindness too
often so I though I might spread the joy. Your absolutely right, there are
good software programs and I even have insight on my computer which I have
put off learning. Learning insight is high on my list of to-do things for
this year. I searched thru the archives for cone 6 glazes with the
adjectives beautiful or great and have tried several glazes on test tiles
and recently a few on larger pots. I also have tested several of Will
Edward's and Alisa's glazes. I plan to post my experiences in the near
future. I got my gas kiln up and running yesterday so I'll be able to test
in both oxidation and reduction. Yesterday, I mixed up about 30 tests [I'm
really getting into this thing]. What I really miss in my change over are a
couple of my ash glazes and a Don Davis Shino that I just love.
Tom Sawyer
tsawyer@cfl.rr.com
Lorraine Pierce on wed 13 jun 01
Morning Tom...I know one of the glazes you want to change is a wood ash
reduction by Val Cushing, ( from ^10 to ^6 reduction).
Here are a couple of Cushing ash glazes in your firing range that I have yet
to try.
Cushing's Dry Ash ^6-10 reduction
wood ash 50
borax 25
ball clay 25
Cushing's Rivulet Ash ^5-6 reduction
wood ash 50
gerstley borate 20
whiting 12
EPK 8
flint 10
Good luck, Lori Pierce in New Port Richey, Fl.
C TRIPP on thu 14 jun 01
Hi Tom,
I would recommend looking at John Hesselberth's site under the Glaze
Stability section for some particularly nice ^6 glazes and an idea of their
qualities.
While I have very little experience in changing ^10 glazes to ^6, I have
read alot about it and it seems there is a large body of people out there
who say in a flowery way to "forget it". They say that once you move more
than a cone or two, you have a whole new glaze and you might as well kiss
the old favourites a fond good bye and go on to find new loves. Of course,
rules and regs are made to be broken... but heads do tend to bruised when
banged against a wall.
Best of luck,
Carol
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