Connie Waring on thu 27 dec 01
Now that I'm starting to get a little bit more into glazing
I think I've found out that some glaze names that I thought
referred to colors mean something else. Can someone explain
these to me?
1.) What are the characteristics of a "chun" glaze?
2.) What is a "mamo" glaze? I had thought it was just
creamy white, but now I see recipes for different colored
ones?
3.) I understand that an ash glaze uses some type of
ash for the flux, but does this give a glaze certain
characteristics?
4.) What distinguishes a "flambe" glaze?
5.) I had thought that "celadon" referred to a light blue-green
color, but now I'm seeing recipes for yellow, gray, etc.? What
does "celadon" mean?
6.) I thought that "temmoku" was just brown glaze that broke
to reddish color on the edges?
7.) What distinguishes a "shino" glaze?
8.) What's the difference between a formula and a recipe?
9.) I see "recipes" for Copper blue-green Glazes, but the
photos look red-brownish?
10.) I see alot of "recipes" that start with VC in the name.
What does this refer to?
thanks for all the help!
Connie
=============================================
Connie Waring
connie@karattopp.com
Houston, TX
Marcia Selsor on fri 28 dec 01
Connie,
You are not kidding Glaze 102. I hope others will join in because I may
have some different perceptions than some.
Connie Waring wrote:
>
> Now that I'm starting to get a little bit more into glazing
> I think I've found out that some glaze names that I thought
> referred to colors mean something else. Can someone explain
> these to me?
>
> 1.) What are the characteristics of a "chun" glaze?
A 'chun' glaze IMHO is a blue/red/purple/turquoise type of chinese
copper glaze
>
> 2.) What is a "mamo" glaze? I had thought it was just
> creamy white, but now I see recipes for different colored ones?
I don't knw this one
>
>
> 3.) I understand that an ash glaze uses some type of
> ash for the flux, but does this give a glaze certain
> characteristics? Ash glazes when not from a wood fired kiln, use wood ash
or rice stalk ash as the flux. They are not necessarily runny looking.
Anne Fallis Elliot has some beautiful matt blacks, and tans.
>
> 4.) What distinguishes a "flambe" glaze? Is a copper red glaze.
>
> 5.) I had thought that "celadon" referred to a light blue-green
> color, but now I'm seeing recipes for yellow, gray, etc.? What
> does "celadon" mean? Celedon does mean a green glaze but we know there are many shades of green. Also, the firing has much to do with the results of celedons. My favorite celedon can very gray to bluish green in subtle tones.
>
> 6.) I thought that "temmoku" was just brown glaze that broke
> to reddish color on the edges? Tenmoku is a n iron laden glaze the can go from deep black, brown, iron red with iron crystals depending ...
>
> 7.) What distinguishes a "shino" glaze? The many looks of shino... there was a show in NY this Fall with pots from 20 potters working with shino, a Japanese type glaze. It can show toasty warm skin of clay with white glaze, although I saw some incredible shino glazes in Charlotte last year. The mayor, a master of shino, recently posted a pic of a present from his Japanese friend which hunbled everyone with its beauty. Go back to the archives to see.
>
> 8.) What's the difference between a formula and a recipe? A recipe and a formula could be the same thing, but if it is referring to the unity formula, then this is a breakdown of the chemical content according to Ro, RO2, R2O3 factors which potters use for glaze calculation especially now in the days of computer software for easy calculating. The chemical breakdown would show Alumina as a quantity and silica as another quantity while in the recipe they could be in an amount of kaolin.
>
> 9.) I see "recipes" for Copper blue-green Glazes, but the
> photos look red-brownish? This I can't answer.
>
> 10.) I see alot of "recipes" that start with VC in the name.
> What does this refer to? This is referring to Val Cushing, a long standing glaze/potter guru from Alfred University in NY. He has published a book with infinite information from his classes and former students who passed through Alfred College of Ceramics.
>
> thanks for all the help!
>
> Connie
>
> =============================================
> Connie Waring
> connie@karattopp.com
> Houston, TX
>
> ______________________________________________________________________________
> 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.
--
Marcia Selsor
selsor@imt.net
http://www.imt.net/~mjbmls
http://www.imt.net/~mjbmls/Tuscany2002.html
Terrance Lazaroff on fri 28 dec 01
Connie;
It is good to see that there is an strong interest in really understanding
glazes.
I suggest you go through the archives first and try to answer your
questions. I am sure you will find most of the answers that you seek. Once
this task is done come back to the list to find the answers to those
questions that remain.
Terrance
Paul Lewing on fri 28 dec 01
on 12/27/01 9:06 PM, Connie Waring at connie@KARATTOPP.COM wrote:
> 1.) What are the characteristics of a "chun" glaze?
High-fire reduction, glossy, streaky blue/white/pink.
>
> 2.) What is a "mamo" glaze? I had thought it was just
> creamy white, but now I see recipes for different colored
> ones?
High-fire reduction matte, typically orange with brown or red flecks where
thin, white where thick. I believe Mamo was someone's name.
>
> 3.) I understand that an ash glaze uses some type of
> ash for the flux, but does this give a glaze certain
> characteristics?
You can use small amounts of ash as a flux in almost any glaze to get
surface mottling, but if it's got enough ash to be called an ash glaze, it
will usually be greenish, glossy and runny. Usually, but not always, a
high-fire reduction effect.
>
> 4.) What distinguishes a "flambe" glaze?
Pinkish color caused by reducing copper, usually at high fire. Asian
potters tended to name their effects, while European potters named their
recipes. So "flambe", "ox-blood", "peach-bloom", and so on are translations
of Chinese or Japanese names for glaze colors, maybe all from the same
bucket, but looking slightly different. A western potter might consider
that they were all just color variations on the same glaze, not different
glazes.
>
> 5.) I had thought that "celadon" referred to a light blue-green
> color, but now I'm seeing recipes for yellow, gray, etc.? What
> does "celadon" mean?
Celadon glazes were invented as a cheap imitation of jade, so celadons can
be any color that jade normally comes in, but normally, yes, they're glossy
pale grey-green, made with a small amount of iron in reduction.
>
> 6.) I thought that "temmoku" was just brown glaze that broke
> to reddish color on the edges?
This is another Oriental name for a glaze color or effect, typically black
breaking to red-brown in the thin areas. Another glossy high-fire reduction
color.
>
> 7.) What distinguishes a "shino" glaze?
Yet another glossy high-fire reduction effect, usually orange where thin and
whitish when thick, usually has some of its flux from soluble materials,
often crawls when thick or over trimmed areas.
>
> 8.) What's the difference between a formula and a recipe?
A recipe usually refers to a list of raw materials for a glaze with a weight
measure for each material. A formula usually refers to an analysis of the
oxides present in a fired glaze.
>
> 9.) I see "recipes" for Copper blue-green Glazes, but the
> photos look red-brownish?
Copper typically gives green in oxidation, and reddish in reduction. Maybe
the pots in the photos in question just weren't fired correctly.
>
> 10.) I see alot of "recipes" that start with VC in the name.
> What does this refer to?
Val Cushing, one of America's greatest potters and teachers and originator
of many glaze recipes. Or it could refer to glaze recipes captured from the
Viet Cong back in the '60's. (Sorry, just kidding)
Paul Lewing, Seattle
| |
|
