Jocelyn McAuley on sat 11 aug 01
I can't remember if this fits the glaze criteria that was desired,
but I just ran across an Antique Green in Burleson's Ceramic Glaze
Handbook.
Antique Green Cone 9-10, Reduction
Nepheline Syenite 44.0
Whiting 15.0
Talc 13.0
Kaolin (EPK) 10.0
Zinc Oxide 3.0
Copper Carbonate 3.0
Light Rutile 10.0
"Comments:
This glaze is best when applied in a thick to medium coat, which causes
color variations. A thin application produces tannish-green vronze, thick
produces dark gray green. This glaze will separate into droplets like an
ash glaze when sprayed, and will move and pool when thick. The satin
surface is reminiscent of green bronze patina."
--
Jocelyn McAuley ><<'> jocie@worlddomination.net
Eugene, Oregon
Ron Roy on sat 11 aug 01
Way short of silica - not durable - will probably change colour in use -
test with lemon or orange slice overnight.
RR
>I can't remember if this fits the glaze criteria that was desired,
>but I just ran across an Antique Green in Burleson's Ceramic Glaze
>Handbook.
>
>Antique Green Cone 9-10, Reduction
>
>Nepheline Syenite 44.0
>Whiting 15.0
>Talc 13.0
>Kaolin (EPK) 10.0
>Zinc Oxide 3.0
>
>Copper Carbonate 3.0
>Light Rutile 10.0
Ron Roy
RR# 4
15084 Little Lake Rd..
Brighton,
Ontario, Canada
KOK 1H0
Residence 613-475-9544
Studio 613-475-3715
Fax 613-475-3513
Jocelyn McAuley on sun 12 aug 01
Ron's reply made me check back with the book to make sure I didn't forget
the silica line... no I didn't. It is correctly copied, but it strikes me
as odd.
I was put off by the recipe not adding up to 100, because I had assumed
these were percentages. I checked back in the book, and at the beginning
of the glaze recipe section it states that "the recipes are given in
percentages. In some cases, the recipe does not total 100 percent".
Now, I know I'm an intellegent persson, but that makes *no* sense to
me. Why wouldn't these have been published as grams or percentages
instead of left hanging as they are?
--
Jocelyn McAuley ><<'> jocie@worlddomination.net
Eugene, Oregon
becky schroeder on sun 12 aug 01
as the original asker of the question about the recipe for antique green i
don't want anyone to be confused with the replies. i was looking for a cone
5-6 oxidation glaze which 2 helpful folks provided me with (see below for
recipe). it is wonderful over or under all sorts of other cone 5-6
oxidation glazes. i have no knowledge or experience with the recipe provided
for cone 9 reduction. it may be wonderful but i don't know squat about it.
Antique Green
Kaolin 270
Flint 160
Frit 3134 490
Tin Oxide 80
Copper Carb. 20
Red Iron Ox. 20
becky schroeder
_________________________________________________________________
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Veena Raghavan on sun 12 aug 01
Message text written by Ceramic Arts Discussion List
>Way short of silica - not durable - will probably change colour in use -=
test with lemon or orange slice overnight.
<
Hi Ron,
=
This sounded like a nice glaze from the description. In your
opinion, would it be alright to use it on the outside of pots, or would i=
t
not be durable.
Thank you in advance for your input.
All the best.
Veena
Veena Raghavan
75124.2520@compuserve.com
Ron Roy on mon 13 aug 01
Hey - this may be a durable glaze - if anyone gets it tested we would all
like to hear about the results.
RR
>as the original asker of the question about the recipe for antique green i
>don't want anyone to be confused with the replies. i was looking for a cone
>5-6 oxidation glaze which 2 helpful folks provided me with (see below for
>recipe). it is wonderful over or under all sorts of other cone 5-6
>oxidation glazes. i have no knowledge or experience with the recipe provided
>for cone 9 reduction. it may be wonderful but i don't know squat about it.
>
>
>Antique Green
>
>Kaolin 270
>Flint 160
>Frit 3134 490
>Tin Oxide 80
>Copper Carb. 20
>Red Iron Ox. 20
>
>
>becky schroeder
Ron Roy
RR# 4
15084 Little Lake Rd..
Brighton,
Ontario, Canada
KOK 1H0
Residence 613-475-9544
Studio 613-475-3715
Fax 613-475-3513
Snail Scott on mon 13 aug 01
At 07:50 PM 8/12/01 -0700, you wrote:
>I was put off by the recipe not adding up to 100, because I had assumed
>these were percentages. I checked back in the book, and at the beginning
>of the glaze recipe section it states that "the recipes are given in
>percentages. In some cases, the recipe does not total 100 percent".
Yep, since 'percent' means 'per 100', you would assume
adding to 100 would be essential. Rather a lot of people,
though, use 'percent' when they mean 'proportion'.
-Snail
Paul Lewing on mon 13 aug 01
on 8/13/01 2:50 AM, Jocelyn McAuley at jocie@WORLDDOMINATION.NET wrote:
> I was put off by the recipe not adding up to 100, because I had assumed
> these were percentages. I checked back in the book, and at the beginning
> of the glaze recipe section it states that "the recipes are given in
> percentages. In some cases, the recipe does not total 100 percent".
You're right, this is nonsense. The word "percent" is Latin for "parts of
100". If it doesn't add up to 100, it's not percents. It could be grams,
depending on how big a batch of glaze you're making, though.
Oddly enough, this is probably the most common math question I get at glaze
chemistry workshops. I'm always amazed. I got it so often that I wrote an
article about that and some other math questions for Pottery Making
Illustrated, which they published in the Winter 2001 issue under the title
"What Are Those Numbers?"
But here's the bottom line. If you see a recipe of materials and numbers,
the numbers are always a weight measurement. They can be any weight
measurement, like grams, pounds, or tons, but not volume measurements like
quarts or cc's. If they total 100, they are also percentages. If you're
making a 100g batch, it's both grams and percentages. If you multiply them
all by 50, let's say, to make a 5000g batch (big enough to dip some pots in)
then the numbers are still grams, but they're not percentages any more, even
though they're still in the same proportion to each other.
Make sense?
Paul Lewing, Seattle
Ron Roy on mon 13 aug 01
Hi Veena,
Do 2 tiles and leave one in the dish washer for a couple of weeks - I would
think it will show ware - let us know what happened. I don't think it will
hold up very well if used a lot.
RR
>Message text written by Ceramic Arts Discussion List
>>Way short of silica - not durable - will probably change colour in use -
>test with lemon or orange slice overnight.
><
>
>Hi Ron,
>
> This sounded like a nice glaze from the description. In your
>opinion, would it be alright to use it on the outside of pots, or would it
>not be durable.
>
> Thank you in advance for your input.
>
>All the best.
>
>Veena
>
>Veena Raghavan
>75124.2520@compuserve.com
>
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Ron Roy
RR# 4
15084 Little Lake Rd..
Brighton,
Ontario, Canada
KOK 1H0
Residence 613-475-9544
Studio 613-475-3715
Fax 613-475-3513
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