Many 3D printing hobbyists and small print-farm businesses underprice their work because they calculate only the raw cost of plastic spool filament, neglecting electricity, machine wear, print failures, and operator time.
The 5 Pillars of Manufacturing Cost
- Material Cost: Spool price divided by spool weight times part gram weight (accounting for support material and purge towers).
- Electricity: Printer bed and nozzle wattage (typically 120W–250W) multiplied by print hours and your local utility kWh rate.
- Machine Depreciation: The replacement cost of nozzles, PTFE tubes, stepper belts, and linear rails divided over an expected 3,000 to 5,000 hour operational lifespan.
- Labor & Post-Processing: Slicing, bed preparation, support removal, and quality inspection.
- Failure Risk Buffer: A 10% to 15% allowance to cover failed prints, bed adhesion shifts, and filament clogs.
Selling Price = (Total Production Cost ÷ (1 - Desired Profit Margin %))
