Helen Bates on tue 4 dec 01
Marianne and Ron,
The Rosie's red Marianne referred to is nearly the same as the one we
use at Loyalist C. in Belleville. The only difference is the RIO,
which in ours is 13.1 % where hers (is it possibly from Haliburton?)
is 15.0 %.
The analysis below is what Margaret Barlow worked out for me on
Insight. The comments below are mine from when I sent her the glaze
recipe for analysis.
Margaret also worked out a fix to adjust for Frit 439 instead of GB,
but we haven't had to use that.
Here is the recipe as found in Ron Roy's reply in Clayart to Marianne
Lombardo:
>Rosies Red
>29.7 Flint
>5.0 EPK
>19.8 Kona F-4 Feldspar
>13.9 Talc
>31.7 Gerstley Borate
>plus 15.0 RIO
>
Here's the recipe as analysed for me by Margaret:
> LC4 Rosie's Red
> ===========
> SILICA.............. 29.70 29.67%
> EPK KAOLIN.......... 5.00 5.00%
> G-200 FELDSPAR G200. 19.80 19.78%
> TALC................ 13.90 13.89%
> GERSTLEY BORATE..... 31.70 31.67%
> ========
> 100.10
>
> CaO 0.40* 7.99%w 8.70%m
> MnO2 0.00 0.03%w 0.02%m
> MgO 0.42* 6.02%w 9.13%m
> K2O 0.07* 2.48%w 1.61%m
> Na2O 0.11* 2.43%w 2.40%m
> Fe2O3 0.00 0.24%w 0.09%m
> TIO2 0.00 0.02%w 0.01%m
> B2O3 0.41 10.22%w 8.98%m
> AL2O3 0.19 6.85%w 4.10%m
> SiO2 2.97 63.73%w 64.95%m
> P2O5 0.00 0.01%w 0.00%m
>
>
>
> COST/KG 1.53
> Si:Al 15.82
> SiB:Al 18.01
> EXPAN332.69
>
> Notes:
>
>
> ADD - Red Iron Oxide ... 13.1 %
>
>
>
> This glaze has been a joy to use. It doesn't run, it has interesting reds
> where thick breaking to blue and green on edges or where thinner. At cone
> 6 it is somewhat satiny, but still gleams in the light. At cone 8 it is
> very shiny, and not as interesting, but still very stable in the kiln.
>
(I did read what the different columns of oxides were a few months
ago, but haven't used the information, and can't now remember. - hb)
Just thought it might be of interest.
Helen
--
=======================================================================
Helen Bates - mailto:nell@quintenet.com
Web - http://www.geocities.com/nelbanell/HelensClayPicks.html
B. Amsterlaw's link to my Clayart Posts - http://amsterlaw.com/nell/
=======================================================================
Lorraine Pierce on tue 4 dec 01
Hi Helen...I would like to test Rosie's Red ^6 ox glaze with the GB replaced
with frit 439 by Margaret Barlow....hope you will post it. Thanks. Lori
Pierce in New Port Richey, Fl.
Margaret Barlow on tue 4 dec 01
Hi Lori,
Just thought I should let you know that there is a solubility problem with
frit 439 and a local potter has had problems with it forming concretions in
the glaze bucket after a while.
I have never used it or even tested it myself. I used it in the glaze for
Helen because she asked me about using it as a sub for Gerstley Borate. I
have not tested the original Rosie's Red or the one using frit 439 so have
no idea how it works. I don't think Helen has tested it yet either.
Margaret
-----Original Message-----
From: Lorraine Pierce
To: CLAYART@LSV.CERAMICS.ORG
Date: Tuesday, December 04, 2001 1:06 PM
Subject: Re: Rosie's Red
>Hi Helen...I would like to test Rosie's Red ^6 ox glaze with the GB
replaced
>with frit 439 by Margaret Barlow....hope you will post it. Thanks. Lori
>Pierce in New Port Richey, Fl.
>
>___________________________________________________________________________
___
>Send postings to clayart@lsv.ceramics.org
>
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melpots@pclink.com.
>
Tracy Taylor on thu 7 jul 05
Hi,
A batch of Rosie's Red was made up for me, and I noticed the recipe I =
gave only had Red Iron Oxide at 13.1%. When fired to cone 6 there is no =
red at all!! I have taken as much water off as I can, as I thought it =
being thin would give me the blues......my question is, can I add RIO to =
the mixed glaze? I know it would be a real guess, but I want some =
RED!!!
Thanks,
Tracy in Cobourg
linda rosen on sat 9 jul 05
Before you give up on your batch of glaze make sure you are using a =
very
slow cooling cycle. I have noticed a dramatic difference with Rosie's =
when I
watch the cool down. Try the cycle suggest by Ron and John in MC6G for
their glazes (or search Clayart for slow cycles). Of course you can =
still
add iron if you know the quantities in your bucket. My rosie recipe has =
15%
iron.=20
Linda=20
Toronto
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Tracy =
Taylor
Sent: Thursday, July 07, 2005 9:12 AM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Rosie's Red
Hi,
A batch of Rosie's Red was made up for me, and I noticed the recipe I =
gave
only had Red Iron Oxide at 13.1%. When fired to cone 6 there is no red =
at
all!! I have taken as much water off as I can, as I thought it being =
thin
would give me the blues......my question is, can I add RIO to the mixed
glaze? I know it would be a real guess, but I want some RED!!!
Thanks,
Tracy in Cobourg
_________________________________________________________________________=
___
__
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.
Ron Roy on sat 9 jul 05
Hi tracy,
Yes you can - the trick is - don't add too much.
If you add say 1 or 2% at a time - sieve and test you will not add too much.
RR
>Hi,
>A batch of Rosie's Red was made up for me, and I noticed the recipe I gave
>only had Red Iron Oxide at 13.1%. When fired to cone 6 there is no red at
>all!! I have taken as much water off as I can, as I thought it being thin
>would give me the blues......my question is, can I add RIO to the mixed
>glaze? I know it would be a real guess, but I want some RED!!!
>Thanks,
>Tracy in Cobourg
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513
Reg Wearley on mon 11 jul 05
Hi,
I see several posts about Rosie's Red-will anyone
care to share the recipe? It's a cone 6 oxidation
glaze, right? --Reg
--- Tracy Taylor
wrote:
> Hi,
> A batch of Rosie's Red was made up for me, and
> I noticed the recipe I gave only had Red Iron
> Oxide at 13.1%. When fired to cone 6 there is
> no red at all!! I have taken as much water off
> as I can, as I thought it being thin would give
> me the blues......my question is, can I add RIO
> to the mixed glaze? I know it would be a real
> guess, but I want some RED!!!
> Thanks,
> Tracy in Cobourg
>
>
______________________________________________________________________________
> 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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Gordon Ward on tue 12 jul 05
Hi Reg,
I don't know too much about Rosie's red, but there is some interesting =20=
discussion on cone 6 iron red glazes at =20
http://www.potters.org/subject72301.htm
I normally don't fire to cone 6 oxidation but I have tried Randy's red =20=
and thought it was quite stunning. A bright cinnabar color.
Here is a post from Alisa in Denmark posted in 2002 on Rosie's Red =20
including recipie:
Glaze test for: Glaze test for Rosie's Red, cone 6, oxidation
Source: Clayart Credited to:
All tests fired on white, iron flecked, mid-range stoneware. Fired to =20=
cone 6 (1220c) in oxidation.
Firing ramp: 100c (212f) per hour to 600c (1112f) 150c (302f) per hour =20=
to 1100c (2012f) 100c per hour to 1220c (2228f) 15 - 30 minute soak =20
depending on matts and glosses used. cool down 100c per hour to 900c. =20=
Natural cool down to 150c (approximately 15 hours)
Recipe: 29.7 Flint 5.0 Kaolin 19.8 Kona f-4 Feldspar 13.9 Talc 31.7 =20
Gerstley Borate
ADD 15 RIO
Note: All raw materials measured up or down to nearest whole decimal. =20=
Oxides used on percent basis to a 100 gram batch of glaze.
Substitutions: Forshammer Spar for Kona F-4
Resulted in: Dark brown gloss with rust colored spots where glaze lay =20=
lowests and thickest. Black gloss where glaze went over high spots and =20=
where thinnest.
Will re-fire in bisque to see if it goes redder.
Regards from Alisa in Denmark
Gordon
On Jul 11, 2005, at 4:29 PM, Reg Wearley wrote:
> Hi,
> I see several posts about Rosie's Red-will anyone
> care to share the recipe? It's a cone 6 oxidation
> glaze, right? --Reg
>
>
>
> --- Tracy Taylor
> wrote:
>
>> Hi,
>> A batch of Rosie's Red was made up for me, and
>> I noticed the recipe I gave only had Red Iron
>> Oxide at 13.1%. When fired to cone 6 there is
>> no red at all!! I have taken as much water off
>> as I can, as I thought it being thin would give
>> me the blues......my question is, can I add RIO
>> to the mixed glaze? I know it would be a real
>> guess, but I want some RED!!!
>> Thanks,
>> Tracy in Cobourg
>>
>>
> =
_______________________________________________________________________=20=
> _______
>> 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.
>>
>
>
>
>
> ____________________________________________________
> Sell on Yahoo! Auctions =96 no fees. Bid on great items.
> http://auctions.yahoo.com/
>
> =
_______________________________________________________________________=20=
> _______
> 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.
>
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