3D printing cost calculator
What does a print really cost? Material and electricity are the baseline, machine cost and scrap rate are optional add-ons — for an honest price per part.
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Material and electricity are the baseline
Material cost comes from weight and filament price, electricity cost from print time, power draw and your electricity price. Together, these are the realistic floor for most private prints. Example: 50 g of filament at 25 €/kg costs 1.25 €. 3.5 hours at 120 W and 0.30 €/kWh costs another 0.13 €.
Why the scrap surcharge formula isn't just a percentage addition
If one print in ten fails, it isn't enough to add 10% to the cost — that wouldn't actually cover the material cost of the failed prints. The correct approach: expected cost per successful print = base cost ÷ (1 − failure rate). At 10% scrap on a base cost of 10.00 €, that's 11.11 €, not 11.00 €.