Robyn's Cone 6 Ox: Wright's Base Glaze Test: 1/2% Chrome Oxide, Spring 2011

Recipe:
Lithium Carbonate 3
Strontium Carbonate 9
Ferro Frit 3110 59
EPK Kaolin 12
Silica 17
+
Chrome Oxide 0.5

Evaluation:
Transparent chartreuse, glossy, crazing.

This is a nice bright colored glaze, evident over white slip or white clay bodies. Over raw stoneware, it loses some of its brilliance and looks more olive green. Pooling occurs in the depressed areas of texture. Stability could be worked on to decrease some of the crazing.

Robyn's Cone 6 Ox: Cushing's Matte Base 5, Spring 2011

Recipe:
Custer Feldspar 40
Frit 3124 9
Talc 9
Whiting 16
EPK 10
Flint 16

Evaluation:
White, semi-opaque, satin matte, good stability.

This is a nice milky white glaze. Volatilization is evident on the stoneware clay body. Layered under Wright's Base Glaze: 1% Copper Carbonate produces a nice surface depth and color.

Robyn's Cone 6 Ox: Wright's Water Blue Glaze, Spring 2011

Recipe:
Lithium Carbonate 3
Strontium Carbonate 9
Ferro Frit 3110 59
EPK Kaolin 12
Silica 17
+
Bentonite 2
Copper Carbonate 5

Evaluation:
Transparent, glossy, stable, pooling in depressed areas of texture.

This glaze has proved to be a good base for colorant tests because it is already very stable. More vibrant color appears on white slip or clay bodies.

Cone 10 Moon Rocks Shino Nerissa Cook - Clay and Glaze Spring 2011

Recipe:

Soda Ash 10.01

Potash 45.64

Spodumene 38.04

EPK 6.31

This Shino has a subtle variance in color. You will get mostly opaque glossy white with some carbon trapping and iron oxide reds. The amount of black and red will differ with each piece and firing, a fun glaze to work with. Firing to cone 6 makes for a super opaque white with lots of pitting, like little craters in your Moon Rocks Shino!

Cone 10 Red Shino Nerissa Cook - Clay and Glaze Spring 2011

Recipe:

Nepheline Syenite 40

Spodumene 30

Ball Clay 17

Soda Ash 8

Kaolin 5

This Shino produces a great variance in hues. Nice carbon trapping and glossy white over a white clay and bronzy, coppers over the bisqued stoneware. Overall a stable glaze that will fire with unpredictable results, colorwise.

Shannon's Matt "B" Glaze Cone 6 Ox

Shannon's Matt "B" Glaze Cone 6 Ox

Recipe:

Shannon's Matt "B" Glaze Cone 6 Ox

Robyn's Cone 10 Red: Cushing's Secrest Temmoku, Spring 2011

Recipe:
Custer Feldspar 53
EPK 6
Flint 24
Whiting 12
Barium Carbonate 2.5
Zinc Oxide 2.5
+
Red Iron Oxide 10

Evaluation:
This glaze is a fairly standard temmoku; nice deep black with browns breaking over raised areas, as well as some evident metallic sheen.

Robyn's Cone 6 Ox: Wright's Base Glaze Test: 1% Copper Carbonate, Spring 2011

Recipe:
Lithium Carbonate 3
Strontium Carbonate 9
Ferro Frit 3110 59
EPK Kaolin 12
Silica 17
+
Copper Carbonate 1

Evaluation:
Transparent aqua blue, glossy, crazing, unstable.

Like the 1/2% Chrome Oxide base glaze colorant test, this glaze is lively and bright. However, stability is somewhat of an issue; it was unstable on the test tile, as evident by the drips and crazing, but when tested again, there were no drips off the cylinder and it appeared to be more stable. Nice surface depth is achieved when layered over top Matte Base 5 from Cushing's Handbook. It also looks nice over black slip, creating a deep navy blue.