A SMALL WORKSHOP TOOL
Less guesswork between
the slicer and the quote.
Spool & Sum helps independent makers assemble a cost estimate and prepare a customer quote for filament-printing work.
What it does
It combines your batch data, material prices, machine and labor rates, fulfilment costs and selling fees. It then calculates a cost-based target price and lets you compare a custom price. Every formula is available in the calculation method.
What to check yourself
The tool does not slice models, measure a printer, predict market demand or calculate tax. No physical printer measurements are supplied. Replace sample figures with your own job data and confirm costs, specifications and taxes before acceptance.
References and independence
Prusa’s public printing calculator is a reference for categories such as material, electricity, preparation, postprocessing and machine upkeep. Our batch conventions, reserve and pricing equations are documented separately. This site is independent and not endorsed by any printer manufacturer.
Commercial links
There are no paid referral links, advertisements, subscriptions or checkout in this release. Any future affiliate recommendations should be identified where they appear.
Put your own time, material and business costs into the estimate.
Open the calculator ↗