© Duncan Shearer, 2005 Practical Glaze Course 6

Colour Triaxial Testing

Aim:
1. To use triaxial testing to examine the effects of various colouring oxides in combinations.

Method:
Use the 2 sheets provided, one is the triaxial graph and the other details the glazes that need to be made up and the various percentages of each to mix together. Use the same method as for Material Triaxial Testing to mix the glazes and dip the test tiles.

Analysis:
Layout the test tiles in the same order as the triaxial graph and note the variation of colours across the tiles. Also note if any of the colouring combinations made the glaze more or less fluid.

Summary:
Triaxial blends are a fast and effective way to explore a multitude of colour effects and to quickly refine a colour pallet that works.
Glaze P % Batch = 600g Glaze Q % Batch = 600g Glaze R % Batch = 600g
Soda Feldspar 45 270 Soda Feldspar 45 270 Soda Feldspar 45 270
China Clay 10 60 China Clay 10 60 China Clay 10 60
Whiting 15 90 Whiting 15 90 Whiting 15 90
Calcium Borate 10 60 Calcium Borate 10 60 Calcium Borate 10 60
Silica 20 120 Silica 20 120 Silica 20 120
Copper Carb 5 30 Iron Oxide 5 30
Tile P ml Q ml R ml Copper Carb Iron Oxide
1 100 0 0
2 80 20 1 0
3 80 20 0 1
4 60 40 2 0
5 60 20 20 1 1
6 60 40 0 2
7 40 60 3 0
8 40 40 20 2 1
9 40 20 40 1 2
10 40 60 0 3
11 20 80 4 0
12 20 60 20 3 1
13 20 40 40 2 2
14 20 20 60 1 3
15 20 80 0 4
16 100 5 0
17 80 20 4 1
18 60 40 3 2
19 40 60 2 3
20 20 80 1 4
21 100 0 5
MIX 0.33 0.33 0.33 1.67 1.67









Glaze S % Batch = 600g Glaze T % Batch = 600g Glaze U % Batch = 600g
Soda Feldspar 45 270 Soda Feldspar 45 270 Soda Feldspar 45 270
China Clay 10 60 China Clay 10 60 China Clay 10 60
Whiting 15 90 Whiting 15 90 Whiting 15 90
Calcium Borate 10 60 Calcium Borate 10 60 Calcium Borate 10 60
Silica 20 120 Silica 20 120 Silica 20 120
Manganese Diox 5 30 Titanium Diox 5 30
Tile S ml T ml U ml Manganese Diox Titanium Diox
1 100 0 0
2 80 20 1 0
3 80 20 0 1
4 60 40 2 0
5 60 20 20 1 1
6 60 40 0 2
7 40 60 3 0
8 40 40 20 2 1
9 40 20 40 1 2
10 40 60 0 3
11 20 80 4 0
12 20 60 20 3 1
13 20 40 40 2 2
14 20 20 60 1 3
15 20 80 0 4
16 100 5 0
17 80 20 4 1
18 60 40 3 2
19 40 60 2 3
20 20 80 1 4
21 100 0 5
MIX 0.33 0.33 0.33 1.67 1.67









Glaze V % Batch = 600g Glaze W % Batch = 600g Glaze X % Batch = 600g
Soda Feldspar 45 270 Soda Feldspar 45 270 Soda Feldspar 45 270
China Clay 10 60 China Clay 10 60 China Clay 10 60
Whiting 15 90 Whiting 15 90 Whiting 15 90
Calcium Borate 10 60 Calcium Borate 10 60 Calcium Borate 10 60
Silica 20 120 Silica 20 120 Silica 20 120
Cobalt Carb 1 6 Chrome Ox 1 6
Tile V ml W ml X ml Cobalt Carb Chrome Ox
1 100 0 0
2 80 20 0.2 0
3 80 20 0 0.2
4 60 40 0.4 0
5 60 20 20 0.2 0.2
6 60 40 0 0.4
7 40 60 0.6 0
8 40 40 20 0.4 0.2
9 40 20 40 0.2 0.4
10 40 60 0 0.6
11 20 80 0.8 0
12 20 60 20 0.6 0.2
13 20 40 40 0.4 0.4
14 20 20 60 0.2 0.6
15 20 80 0 0.8
16 100 1 0
17 80 20 0.8 0.2
18 60 40 0.6 0.4
19 40 60 0.4 0.6
20 20 80 0.2 0.8
21 100 0 1
MIX 0.33 0.33 0.33 0.33 0.33