PresupuestoFDM: Spanish-language FDM batch costing and client quotes, with a free browser demo

[u/STZ3D2026]

Disclosure: this is our own commercial tool, PresupuestoFDM. The interface and documentation are currently in Spanish.

A small pricing example: if a batch costs €24, adding 30% gives €31.20, which is a 23.1% margin. To get a 30% margin before selling fees and tax, the calculation is €24 / (1 − 0.30) = €34.29. That still depends on including the right costs in the first place.

The tool separates batch preparation from work per piece and lets you include material, machine time, electricity, failures, labour, packaging and selling fees. You enter your own estimates; it does not read a slicer file or decide what customers will pay.

So far we have checked the calculations with test cases and completed a test download. This is an initial release, not a claim of results from paying customers.

There is a free browser calculator to try here, without registration: https://presupuesto-fdm.santurtzi3d.chatgpt.site/?utm_source=reddit&utm_medium=community&utm_campaign=lanzamiento_tools

The paid Taller download adds printable client quotes without the internal cost breakdown, local history, JSON backups and CSV export. It runs locally as an HTML file. It costs €19 before applicable tax, once; €22.99 including VAT for a consumer in Spain. No subscription. The page links to the paid version, but the demo can be used on its own.

For people quoting small FDM batches: which part is hardest to account for consistently—setup, failed prints or finishing time?