Ababi on tue 13 jan 04
First you must have both recipes into the right amounts:
WEATHERED BRONZE BY PETE PINNELL
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Cone 6 1222 deg.C. -
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Lithium Carbonate 0.75
Nepheline Syenite 45.00
OM-4 Ball Clay 7.50
Quartz 6.75
strontium carbonate 15.00
Copper Carbonate 3.75
Titanium Dioxide 3.75
Plus
SATIN WHITE
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Calcium Carbonate 4.70
zinc oxide 2.15
Custer feldspar 12.90
EPK Kaolin 3.85
Flint 1.40
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Write both recipes in the same box
WEATHERED BRONZE BY PETE PINNELL
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Cone 6 1222 deg.C. -
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Lithium Carbonate 0.75
Nepheline Syenite 45.00
ball clay AK 7.50
Quartz 6.75
strontium carbonate 15.00
Calcium Carbonate 4.70
zinc oxide 2.15
Custer feldspar 12.90
EPK Kaolin 3.85
Flint 1.40
Copper Carbonate 3.75
Titanium Dioxide 3.75
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Seger Weight%
KNO 0.366 8.63%
CaO 0.170 3.12%
MgO 0.017 0.22%
ZnO 0.085 2.27%
Li2O 0.033 0.32%
SrO 0.328 11.11%
Al2O3 0.527 17.54%
SiO2 2.689 52.75%
TiO2 0.155 4.04%
K2O 0.116 3.56%
Na2O 0.250 5.07%
Al:Si 5.10
Expan. 8.97
ST 377.47
Send them to the formula field:
I will do it in Matrix and I hope I understood you.
LINDA PAHL BLEND
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Cone 6 1222 deg.C. -
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
spodumen 4.00
Nepheline Syenite 55.30
EPK Kaolin 7.70
talc NYtal 0.50
Calcium Carbonate 4.70
zinc oxide 2.20
strontium carbonate 15.20
Flint 10.60
Copper Carbonate 3.75
Titanium Dioxide 3.75
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Seger Weight%
KNO 0.365 8.35%
CaO 0.171 3.16%
MgO 0.016 0.21%
ZnO 0.086 2.30%
Li2O 0.033 0.32%
SrO 0.328 11.16%
Al2O3 0.527 17.63%
SiO2 2.684 52.95%
TiO2 0.150 3.92%
K2O 0.086 2.67%
Na2O 0.279 5.68%
Al:Si 5.09
Expan. 8.96
ST 377.52
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Ababi Sharon
Glaze addict
Kibbutz Shoval Israel
ababisha@shoval.org.il
http://ababi.active.co.il
http://www.matrix2000.co.nz/Matrix%20Demo/Ababi.htm
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Linda Pahl
Sent: Tuesday, January 13, 2004 7:38 AM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Blending Glazes/New Recipe
Hello to everyone on the list.
I just signed up as a new ClayArt member (was a member briefly a couple
of years ago but have been away from clay for quite a while). I'm back
to pottery (joy!) and I've done a bit of catching up using the ClayArt
archives. Still, I couldn't find an answer to the following question
and would appreciate any assistance.
I'm having trouble figuring out how to blend two different glaze
recipes in a proportion of 75% of one recipe with 25% of the other in
order to come up with a third recipe with the correct proportions and
still adding up to 100 (including the colorants).
I'd like to take 75% of this recipe: (Weathered Bronze)
nepheline syenite 60.00
ball clay 10.00
strontium carbonate 20.00
lithium carbonate 1.00
flint 9.00
Totals: 100.00 %
Also add:
titanium dioxide 5.00
copper carbonate 5.00
with 25% of this recipe: (Satin White)
whiting 18.80
zinc oxide 8.60
feldspar 51.60
epk 15.40
flint 5.60
Totals: 100.00 %
I know this is a feature in HyperGlaze but I no longer use that program
(have offloaded it). I now use GlazeMaster and am very happy with it
as it is the perfect companion to the book Mastering Cone 6 Glazes but
it does not have that particular feature.
Thanks in advance for any assistance.
Linda Pahl
.
Hendrix, Taylor J on tue 13 jan 04
Linda,
Newbie here so get a second opinion, but...
I would think that you could do some simple arithmetic to come up with
the third glaze. Unless I am being a bonehead and misunderstanding your
question.
Multiply the weights of glaze 1 by 0.75 and the weights of glaze 2 by
0.25. Add everything together. It should be close to 100 anyway.
nepheline syenite 45
feldspar 12.9
ball clay 7.5
EPK 3.85
strontium carbonate 15
lithium carbonate 0.75
whiting 4.7
zinc oxide 2.15
Flint 6.75 + 1.4 =3D 7.15
Also:
titanium dioxide 3.75
copper carbonate 3.75
Whew! **Better check my math.** I had to do that twice! It adds to 99
so they are also percentages as well. I think that will give you what
you want. If I'm thinking correctly, that is what you would get if you
did a volumetric blending of those two glazes for a test. Be kind
people if I am wrong. Hehe
Taylor in Waco
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Linda Pahl
Sent: Monday, January 12, 2004 11:38 PM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Blending Glazes/New Recipe
Hello to everyone on the list.
I just signed up as a new ClayArt member (was a member briefly a couple
of years ago but have been away from clay for quite a while). I'm back
to pottery (joy!) and I've done a bit of catching up using the ClayArt
archives. Still, I couldn't find an answer to the following question
and would appreciate any assistance.
I'm having trouble figuring out how to blend two different glaze
recipes in a proportion of 75% of one recipe with 25% of the other in
order to come up with a third recipe with the correct proportions and
still adding up to 100 (including the colorants).
I'd like to take 75% of this recipe: (Weathered Bronze)
nepheline syenite 60.00
ball clay 10.00
strontium carbonate 20.00
lithium carbonate 1.00
flint 9.00
Totals: 100.00 %
Also add:
titanium dioxide 5.00
copper carbonate 5.00
with 25% of this recipe: (Satin White)
whiting 18.80
zinc oxide 8.60
feldspar 51.60
epk 15.40
flint 5.60
Totals: 100.00 %
I know this is a feature in HyperGlaze but I no longer use that program
(have offloaded it). I now use GlazeMaster and am very happy with it
as it is the perfect companion to the book Mastering Cone 6 Glazes but
it does not have that particular feature.
Thanks in advance for any assistance.
Linda Pahl
Linda Pahl on tue 13 jan 04
Hello to everyone on the list.
I just signed up as a new ClayArt member (was a member briefly a couple
of years ago but have been away from clay for quite a while). I'm back
to pottery (joy!) and I've done a bit of catching up using the ClayArt
archives. Still, I couldn't find an answer to the following question
and would appreciate any assistance.
I'm having trouble figuring out how to blend two different glaze
recipes in a proportion of 75% of one recipe with 25% of the other in
order to come up with a third recipe with the correct proportions and
still adding up to 100 (including the colorants).
I'd like to take 75% of this recipe: (Weathered Bronze)
nepheline syenite 60.00
ball clay 10.00
strontium carbonate 20.00
lithium carbonate 1.00
flint 9.00
Totals: 100.00 %
Also add:
titanium dioxide 5.00
copper carbonate 5.00
with 25% of this recipe: (Satin White)
whiting 18.80
zinc oxide 8.60
feldspar 51.60
epk 15.40
flint 5.60
Totals: 100.00 %
I know this is a feature in HyperGlaze but I no longer use that program
(have offloaded it). I now use GlazeMaster and am very happy with it
as it is the perfect companion to the book Mastering Cone 6 Glazes but
it does not have that particular feature.
Thanks in advance for any assistance.
Linda Pahl
Krista Peterson on wed 14 jan 04
Hi Linda,
I have just returned to ceramics after a time also. I feel like I'm almost home(I can't do it full time yet). You know, I would just go about this glaze blending by mixing both glazes up dry(make sure you thoroughly mix them)
and combine them 75/25. That seems like the least complicated way to do it and I believe Tom Coleman does it that way with a couple of his glazes. You won't have the third set of numbers for the third glaze but you could just have each glaze premixed dry and use how much you need.
Happy glazing!
Krista Peterson
-----Original Message-----
From: Linda Pahl
Sent: Jan 12, 2004 9:37 PM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Blending Glazes/New Recipe
Hello to everyone on the list.
I just signed up as a new ClayArt member (was a member briefly a couple
of years ago but have been away from clay for quite a while). I'm back
to pottery (joy!) and I've done a bit of catching up using the ClayArt
archives. Still, I couldn't find an answer to the following question
and would appreciate any assistance.
I'm having trouble figuring out how to blend two different glaze
recipes in a proportion of 75% of one recipe with 25% of the other in
order to come up with a third recipe with the correct proportions and
still adding up to 100 (including the colorants).
I'd like to take 75% of this recipe: (Weathered Bronze)
nepheline syenite 60.00
ball clay 10.00
strontium carbonate 20.00
lithium carbonate 1.00
flint 9.00
Totals: 100.00 %
Also add:
titanium dioxide 5.00
copper carbonate 5.00
with 25% of this recipe: (Satin White)
whiting 18.80
zinc oxide 8.60
feldspar 51.60
epk 15.40
flint 5.60
Totals: 100.00 %
I know this is a feature in HyperGlaze but I no longer use that program
(have offloaded it). I now use GlazeMaster and am very happy with it
as it is the perfect companion to the book Mastering Cone 6 Glazes but
it does not have that particular feature.
Thanks in advance for any assistance.
Linda Pahl
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Alisa Clausen on wed 14 jan 04
Dear Linda,
A day after reading your post, I came to think of something.
Because you mention features on glaze tech. programs, I thought that I could
not help you there as I do not use one yet. It is my goal now this month to
look at the GlazeMaster I have.
However, after rereading your post, I see that you can find out what to do
with a line blend.
This is a tried and true way of finding out new recipes by blending portions
of glazes together.
Since you are wanting to blend rounded percents of two glazes, your project
is easy. You will like doing it and probably from now on will be hooked on
these experiements....
Mix up your two glazes in 300 gram batches each. (you will need 250g of
each but good to have extra)
Your experiment is using 1/4 portions of your batches, or 25% increments.
Have 5 cups ready that can hold 100g glaze with water mixed in.
Mark your one glaze A and the other B
Mark your cups as follows:
4A (100g A glaze)
1A/3B (25 A glaze/75 B glaze)
2A/2B (50 A glaze/50 B glaze)
3A/1B (75 A glaze/25 B glaze)
4B (100 B glaze)
since we are talking about 100g. we can also represent grams in percents.
You see in your tests, you will have 25% of the one glaze mixed with 75% of
the other, plus a range in between to evaluate.
Line blends are very often done in 10% increments. Say, a commercial matte
and a commercial gloss, to see where they become a surface I will want to
use.
I am sure glaze calc. programs are an enormous help and I look forward to
eventually learning one. However, there are many good ways around a glaze
recipe or two or four (Ian Currie's grid method) with a pencil, paper, cups
and concentration.
good luck. These are two glazes I layer like shown in CM and have photos of
them on my website at www.alisa-potshop.dk.
regards from Alisa in Denmark
karen gringhuis on wed 14 jan 04
Linda -
I'm sure someone on the list will tell you how to do
the math. If not, write me back off list.
Meanwhile, 3 comments:
1. Be aware that a recipe comprised of 2 other
recipes may NOT look the same when fired as a wet
blend of the same two orig. glazes. I don't know why.
You may want to test your new combined recipe first.
2. Round off the percentages in your second recipe.
(Except for tiny fractions of colorants, do this even
if you weren't combining the recipes. Fractions like
this are silly and not helpful.) You'll screw it up
more than that in the firing.
3. What you want to do is not an uncommon operation.
Seems to me you've just found a good reason to upgrade
the power of your computer to put HyperGlaze back on
the the machine. Personally I "don't leave home
without it" & owe it much.
=====
Karen Gringhuis
KG Pottery
Box 607 Alfred NY 14802
__________________________________
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Susan Giddings on wed 14 jan 04
So, I am thinking, why not blend them wet?
I first heard of doing this at a Val Cushing workshop I took a couple of
years ago. Played with it quite a bit and sometimes it really works very
well! The 10/90 and 20/80 ratio parts usually work the best. Usually the
best results come if you use the darker, shinier glaze as the small part of
the ratio.
I really don't do anything fussy. Just measure 3/4 cup of this and 1/4 cup
of that. (I actually go metric to do it in tenths, but you get the idea.) I
know that there are about 1 gaziliion reasons why it shouldn't work. And
I'm sorry that I've probably set a few of you to shuddering in horror. And
sometimes, indeed, it doesn't work. But sometimes, it works astoundingly
well.
If you are going to try it, fire with protection! Put the piece on a cup
shaped slap or something that will catch runs. I use a saggar, but I have
NEVER had anything blow up. Doesn't mean there can't be a first time, I
guess. Anyway, regardless, use protection.
Susan, the never ever follow the rules, and if Val Cushing can do it why
can't I at least try, Giddings
------------------
Susan Giddings
Daytime phone: 860-687-4550
Cell phone: 860-930-8813
_________________________________________________________________
Rethink your business approach for the new year with the helpful tips here.
http://special.msn.com/bcentral/prep04.armx
Roly Beevor on thu 15 jan 04
Susan Giddings wrote:
> So, I am thinking, why not blend them wet?
I guess you'ld have to be careful to use the same amount of water to mix the
two glazes, perhaps keeping some back for sieve washing, then putting in any
unused water from the original volume, and keep them well stirred while
making mixtures, and correct the water content in the mixture to get the
right thickness. It would then be easier to make reproducible line blends,
and cut down on handling of dry ingredients.
Roly
E.G. Yarnetsky on thu 15 jan 04
The concern with mixing these glazes wet, is that one may contain more
water than another and therefore less glaze materials. The repeat of
this mix may continually vary. It depends on how precise you need/want
your glazes and the use of them. Food safety is an issue that I believe
has to be considered if these glazes are for functional ware.
That said, I have found a few exciting glazes by mixing up ratios of my
dry glazes. When I am mixing, I will take 75 grams of one glaze, 25 of
another and combine them for a test, or 50/50, 20/80 etc. This can be
done with more than two glazes, with bases only, or with glazes with
colorants already added (make sure they are dry mixed well and wear a
mask) In college we did a triaxal blend of three base glazes - a dry,
satin and a shiny, and then chose one and did color tests from there.
For those who haven't done much of this sort of thing, you will find
that the bases do not necessarily mix like you would expect. Materials
melt differently depending on what they are melted with. You could mix
a matt glaze and a shiny glaze and get a runny glaze! Different
melters will react differently depending upon the recipe! Also note
that a blend of a food safe glaze and another food safe glaze does not
necessarily result in a food safe glaze. If you like a result and want
to use it on functional ware, first do the math and check it on your
glaze program - see if the silica and alumina are in balance. Then
test the glaze as you would any food use glaze. As suggested before,
put something under these test pieces in the kiln as they are
unpredictable!
Happy glazing!
Darlene Yarnetsky, Mudcat Pottery
Paul Lewing on fri 16 jan 04
on 1/13/04 2:51 PM, Hendrix, Taylor J at Taylor_Hendrix@BAYLOR.EDU wrote:
> I'm having trouble figuring out how to blend two different glaze
> recipes in a proportion of 75% of one recipe with 25% of the other in
> order to come up with a third recipe with the correct proportions and
> still adding up to 100 (including the colorants).
>
> I'd like to take 75% of this recipe: (Weathered Bronze)
>
> nepheline syenite 60.00
> ball clay 10.00
> strontium carbonate 20.00
> lithium carbonate 1.00
> flint 9.00
> Totals: 100.00 %
>
> Also add:
> titanium dioxide 5.00
> copper carbonate 5.00
>
> with 25% of this recipe: (Satin White)
>
> whiting 18.80
> zinc oxide 8.60
> feldspar 51.60
> epk 15.40
> flint 5.60
> Totals: 100.00 %
Jeez, People! Let's not make this any more complicated than it needs to be!
You're just trying to make a 4-part glaze here, one part of which is Satin
White, and three parts of which are Weathered Bronze.
Just multiply everything (including the colorants) in the WB by 3 and add it
to 1 part of the SW. So you'd have, e.g., 180 of neph sy from the WB and
18.8 whiting from the SW. The only thing common to both is flint so add 27
from WB to 5.6 from SW. Now you have a 400 g recipe. Divide by 4. Simple.
If you do it right, you end up with 4 each of titanium and copper. And the
resulting dry recipe will be no different than what you would get by mixing
each of these wet and blending them, trust me.
You could probably add the two clays together and use only kaolin, without
seeing much difference.
Paul Lewing, Seattle
Paul Lewing on fri 16 jan 04
on 1/15/04 2:55 AM, Roly Beevor at rolybeevor@CHRISTISON.COM wrote:
> I guess you'ld have to be careful to use the same amount of water to mix the
> two glazes,
Actually, if both glazes are about the same consistency, it won't make any
difference at all whether you've put exactly the same amount of water in
each or not. It's just not that critical.
Paul Lewing
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