This is the first time I have made my own glaze from scratch. Its quite time consuming and involves many precise processes. I choose a Janice Tchalenko Blue glaze.
Glaze Recipe:
Potash Feldspar 30
Whiting 16
Talc 12
China Clay 8
Ball Clay 6
Quartz 6
Colbalt Oxide 2
Iron Oxide 3
I have created a colourless base glaze from the above recipe by omitting the two oxides. The 1000g dry weight created 1880 slop weight. Split into 5 batches of 376g slop/200g dry.
The following alterations have been made:
Batch 1 - Colbalt Carb 2% Iron 4%
Batch 2 - Colbalt Carb 1% Iron 4% Rutile 4%
Batch 3 - Colbalt Carb 1% Rutile 8%
Batch 4 - Copper Carb 1% Rutile 6%
Batch 5 - Iron Ochre 6% Rutile 4%
I am very pleased how the first set of glaze test tiles have come out the kiln as the results provide a subtle and muted colour palette in the hues of blue, green and brown which was what I was aiming for. The next step will be to incorporate local raw materials into the recipe.
Picture:
1- batch 3x2 on top of batch 5
2- batch 4 on top of batch 5
3- batch 1x2 on top of batch 5
4- batch 5 3 layers at top, 2 layers at middle, 1 layer at bottom
5- batch 2 on top of batch 5
6- batch 4 on top of batch 5x2
7- batch 1 on top of batch 5
8- batch 3 on top of batch 5
9- batch 4x2 on top of batch 5
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