Estimate how much starting gold metal is required to deliver a target finished jewellery weight after accounting for sprue, process loss and overall recovery.
The model works backward from finished weight. First it adds the estimated sprue or runner requirement, then it increases the starting requirement to account for the specified process loss.
Production systems may require additional metal for gates, runners and other handling losses. Some of that material may later be recovered, so accounting should distinguish initial charge from permanent material loss.
For planning, replace generic allowances with your own historical rates for the jewellery design, alloy and process. That makes the estimate more useful for actual production control.
It is the estimated material needed before the modeled sprue and process losses occur.
Potentially, depending on the production process and material controls.
No. It calculates mass requirement.