Contact
filamentcalcs.com is a small, independent project run by one person. For bug reports, wrong formulas, new calculator ideas, or anything else worth saying, the best place to send feedback is the project's public issue tracker on GitHub.
When reporting a formula issue, please include your printer model, slicer (Bambu Studio, PrusaSlicer, OrcaSlicer, etc.), and the specific numbers you entered. That makes diagnosis much faster.
If you don't have a GitHub account, signing up is free and takes under a minute. Issues are public by default, which is a feature, not a bug: other users with the same question can find the answer and we avoid the same bug getting reported ten times.
Source code lives at github.com/SolidStone85/filamentcalcs. Pull requests welcome if you want to fix something yourself.