Ratio of Wax to Metal
| Metal | Specific Gravity | |
 |
||
| Brass, Bronze & Copper | 9 | .00 |
| Sterling Silver | 10 | .40 |
| Fine Silver | 10 | .60 |
| 10K Gold | 11 | .60 |
| 14K Gold | 13 | .40 |
| 18K Gold | 15 | .50 |
| 22K Gold | 17 | .30 |
| 24K (fine) Gold | 19 | .30 |
| Platinum | 21 | .40 |
| Palladium | 12 | .20 |
| Multiply the weight of your wax by the specific gravity of the desired metal to determine a rough estimate of the weight of your piece. | ||