Granite + Copper
Experiments with Copper
Description:
Following the progression, experiments with Copper are documented. Currently I have just two examples, a line blend test (below) and a sample bowl (above) using the left over 5% mixture to glaze its outside. It's interesting and very metallic with more copper.
Glaze Recipe
| Material | Amount |
|---|---|
| Mt Vision Granodiorite | 70% |
| Wollastonite | 30% |
| 100% | |
| Copper Carbonate | 1% - 5% |
| Bentonite | 2% |
| 103% - 107% |
Firing
Kiln firing procedures are described here.
Tests
Test 1
Date 9/14/23
Type: Test Tiles
Temp: Cone 6
Kiln: Test Kiln (T28)
Clay: B-Mix
Glaze: Mt Vision Base Glaze, SG 1.43, 200ml batch
Additive: Copper Carbonate
Method: 5 tests of 1%, 2%, 3%, 4% and 5% Copper Carbonate by adding 2, 2, 2, 2 and 2 gm (cumulative 10 gm) without changing the amount of liquid.
| MV Base | |||||
|---|---|---|---|---|---|
| Copper Carbonate | 1 | 2 | 3 | 4 | 5 |
| Added | +2g | +2g | +2 | +2g | +2g |
| Cumulative | +2g | +4g | +5g | +8g | +10g |
Notes:
Honestly these are not that interesting, especially compared to the Iron, Iron / Titanium and Cobalt experiments. The metalic glazes on tiles 4 and 5 are kind of neat-o, but are not for everyday use. Deeper exploration seems required, perhaps with additional materials.