Print-Farm Cost Worksheet: Calculate Cost per Good Part
Prepared by the FilamentBay Materials Team
Use a defined batch and accounting window so rejected attempts remain visible. Comparing spool prices alone can hide supports, purge, machine occupancy and operator time. This worksheet calculates an observed or explicitly estimated cost; it does not promise savings or a production yield.
Batch/job/date range: __________ Currency: __________
Part revision and acceptance criteria: __________
| Output accounting | Quantity |
|---|---|
| Attempted parts, including reprints | __________ |
| Accepted parts meeting the stated criteria | __________ |
| Rejected or unfinished parts | __________ |
| Reason for rejection and treatment of seconds | __________ |
Choose a consistent material boundary. Reconcile slicer estimates with actual consumed spool mass where available, including supports, purge and unusable remnants. If using landed material cost, state whether inbound freight, duties or tax are already included so they are not added a second time.
| Cost line | Quantity and unit rate | Extended cost |
|---|---|---|
| Net material consumed | ____ kg × ____ /kg | __________ |
| Machine occupancy, including failed runs | ____ hours × ____ /hour | __________ |
| Energy, only if excluded from machine rate | ____ kWh × ____ /kWh | __________ |
| Setup, removal, rework and packing labor | ____ hours × ____ /hour | __________ |
| Inspection and other allocated costs | Basis: __________ | __________ |
| Freight not already included above | Allocation: __________ | __________ |
Total batch cost = sum of the extended costs: __________
Cost per good part = total batch cost ÷ accepted parts: __________
If no parts are accepted, record the batch cost and investigate; the per-good-part value is undefined. Record reprints once through their actual inputs rather than adding a separate failure allowance to costs that already include them.
For a purchasing forecast, distinguish measured usage from peak-flow estimates. Peak flow maintained throughout operating hours can overstate consumption. Do not apply an extra extrusion duty factor to actual consumed mass or a measured average that already accounts for idle periods.
Largest uncertain input and how to measure it next: __________
Alternative scenario and single changed assumption: __________