| Composition number | Abonko Clay weight % | Daboase clay weight % | Sawdust weight % | Total % |
| C1 | 50 | 50 | - | 100 |
| C2 | 40 | 50 | 10 (smooth) | 100 |
| C3 | 45 | 45 | 10 (smooth) | 100 |
| C4 | - | 90 | 10 (rough) | 100 |
| C5 | 100 | - | - | 100 |