Katsuyo Aoki

Website

Intricate porcelain sculpture.

Baroque influence -- remind me of Jomon flame pots.

Soda kiln

From Edina Art Center

soda spray: 2 lb soda to 1 gallon water
soda granola: 8 lb soda 1.5 gallon water 1/4 cup salt 11.5 handfuls sawdust

method: @ cone 9 spray, dump granola, and agitate twice per side. Recover heat. Repeat 4 times til cone 10.

Notes:
Dump AWAY from kiln shelves.
Line metal with newspaper to facilitate granola release.

Soda Fire cont'

Wheel thrown @ 4 lb. Final weight ~2 lb.
Fireclay w/ Fe, white slip design
Flashing slips applied after bisque: Shino, Tile Six (T-6), Sandra's Red
Decorative iron
Glazes: Opal, TC Purple
Placement: Floor

22 x 22 x 5 cm (8.6'' x 8.6'' x 2 '') Top view.

The orange peel texture is caused by soda. This piece was blasted, and most of the slip detailing was lost. The TC purple turned into that translucent blue. The opal is that bluish-gold bit near the brown area; the gold is from the decorative iron.

Soda Fire with Flameware! First Batch

These are from the new soda fire kiln at the Edina Art Center, a downdraft gas kiln with 2 gas inputs.
340 pounds were loaded onto 3 stacks (front, middle, back).
Kiln took 14 hours to fire to cone 10-ish (cone 11 down, on account of soda making things droopier).
1 hour body reduction achieved.
Soda was dumped and sprayed at cone 9.

Back stack had some oxidation.


Flameware test tile plate with Probst #2 straight and tinted with black mason stain, with decorative iron on top and underneath. 6.5'' x 6.5'' x 1'' (16.5 x 16.5 x 2.5 cm)

This piece was cracked in the bisque, but the glaze softened the cracked edges considerably, and I will use it as a serving platter as is. It is not suitable for cooking due to the cracking.

Ceramics Taipei

YingGe Ceramics Museum
YingGe Online E-library
Pottery Studio in Taipei, Shuanglian-ish, from this forum post

Other
Google Currency Converter

Flameware Glazes #1 

Untested.
Recipes by Rob Probst (source

Flameware #1 C0ne 9/10
White-red

Lepidolite 32
Dolomite 25
Whiting 3
Talc 3
Gerstley Borate 2.5
Kaolin 25
Flint 9.5


Flameware #3 Cone 9/10
Brown-green

Dolimite 12.4
Whiting 1.6
Potash Feldspar 10
Kaolin 12.8
Flint 2.8
Cobalt Carbonate 0.2
Red Iron Oxide 0.4

Flameware Glaze #2

Original Recipe by Rob Probst (source)
Adaptation by Tetsuya Yamada

Orange-White Flameware #2 Cone 9/10

Custer Feldspar 6
Spodumene 4
Dolomite 4.5
Kaolin 5
Whiting 0.75
Tin Oxide 1

Total = 21.25

Matte opaque white with a very subtle blooming sheen on some portions. Breaks to ruddy orange. Oxide washes and stains run a LOT on the surface.

I've fired to Cone 11 (since that's when the clay body vitrifies) and it's been fine; no change in colour.

~Colorants~

Add 2% Cobalt for a nice blue that breaks to black.

Most stains burn out. Other colorants that work: Vanadium or Ferrous oxide, black mason stain (number unknown), Copper Oxide

Update: Test tiles
Glaze brushed on over some colored spots. Thin to thick.
Some washes applied on top.Most burned out.
Fired Gas Cone 10 unless otherwise noted.

From to, left to right: Vanadium Yellow or Yellow FE oxide; Tin oxide (bubbles); CuCo2; Al Pink (?); Crimson stain; Black stain; 3% Cobalt Oxide Electric Oxidation Cone 10/11

Orange-Brown Flameware

Recipe by Val Cushing
Adaption by Tetusya Yamada
University of Minnesota, Spring 2011

Cone 10(?)/11
C & C Ball Clay 10%
Goldart 10%
AP Green Fire Clay 10%
Hawthorn Fire Clay 5%
Lizella Red Earthenware 5%
Petalite 200 mesh 60%

I've fired this to Cone 10, but it doesn't seem to fully vitrify and some portions remain grey-ish. At Cone 11 it cures completely and becomes a rich orange.

Soda firing pending *w*