Wednesday, March 23, 2011

Cone 6 Glazes / 6號錐氧化燒

On my previous post, I mentioned that two glazes on my tea pot – Orange Street and Creamy Rust are in Mastering Cone 6 Glazes. I think I was wrong. A blog reader couldn’t find the recipes from that book.
Here are the two glaze recipes I would like to share.
Just a friendly reminder!! Cone 6 glazes react to work-heat ratio slightly different from the cone 10 glazes. A different firing program could change how the glaze turned out from firing. Always run some tests on smaller pieces before you use them on your “real” works.
I fired my works in Cone Art kiln (have I ever mentioned that Cone Art is my favorite kiln since I was working for the porcelain company in Taiwan : ) with fast glaze program and hold at cone 6 for 20 minutes.
I got most of cone 6 glazes from Sawtooth School for the Visual Art, Winston-Salem, NC, where I am teaching an intermediate/ advance wheel-throwing class.

ORANGE STREET:
Silica 15.2%
Talc 13.8%
Dolomite 8.1%
EPK 4.5%
Gerstly Borate 17.9%
F-4 Feldspar 46.8%
Red Iron Oxide 12%
Bone Ash 12%
Crocus Martis 6.2%

CREAMY RUST:
Custer 26.6%
Strontium Carbonate 3.3%
Frit 3134 30.6%
Wollastonite 10.6%
Talc 2.3%
EPK 8.4%
Flint 18.2%
Red Iron Oxide 6%
Tin Oxide 5%
Zircopax 8%


my glaze logs recorded how I applied and fired each glaze

glazed the whole piece in Orange Street and then dipped around 1/3 of the piece in Creamy Rust 


when Creamy Rust is over Orange Street, it tend to run

11 comments:

  1. Thanks for sharing the recipes, love the orange street glaze. overlapping in cone 6 oxidation glazes sure can give some interesting results.

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  2. Just wanted to know if this glaze recipe is food safe?

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  3. i really like that orange street glaze, do you fire cone 6 oxidation? gas or electric? is it really a red, or kinda more like a cone 10 ohata?

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  4. Hi Alex, it's cone 6 oxidation in electric kiln. It's close to high fire Iron Red.

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  5. Could you please tell me if the Orange Street is supposed to add up to 136.5?

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    1. Hi DKat, could you tell mw what 136.5 is referring to? Are you asking about a particular material?

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    2. Powen, What DKat is referring to is the standard practice of listing base glaze ingredients in percentages that add up to 100%. The coloring agents and other additives such as Bentonite come after. For example, a recipe for a basic cone 6 celadon:

      Custer Feldspar...........25%
      Silica....................25%
      Whiting...................25%
      EPK Kaolin................25%
      ----
      100%
      Red Iron Oxide 3%

      The custer feldspar, silica, whiting and EPK kaolin are the base glaze ingredients. The red iron oxide is the colorant. I hope this is helpful. (BTW, very pretty glazes.)

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    3. Hi Janine, Thank you for helping me out. Now a day, not much potters understand about this. What type of work do you make?

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  6. Hi DKat, Yes, please use as is. I wrote an explanation on my new post. Sorry about not following up with you early.

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