This is the Robin Hopper Slip with 2% Cobalt Oxide. Mixed to approximately 110% hydration, i.e. for 500g slip, add 550g water.
| Material | Ratio |
| Ball Clay | 75 % |
| Grolleg | 10 % |
| Potash Feldspar | 5 % |
| Flint | 10 % |
| Cobalt Oxide | 2 % |
| Bentonite | 2 % |
This is the Robin Hopper Slip with 2% Cobalt Oxide. Mixed to approximately 110% hydration, i.e. for 500g slip, add 550g water.
| Material | Ratio |
| Ball Clay | 75 % |
| Grolleg | 10 % |
| Potash Feldspar | 5 % |
| Flint | 10 % |
| Cobalt Oxide | 2 % |
| Bentonite | 2 % |
