Small Hours

A workshop of small, free, useful web tools.

Tools

3D Print Cost CalculatorFree

Drop in a sliced file (G-code, .bgcode, 3MF or .ufp) and get the real cost of a print: material, electricity, machine wear, labor and marketplace fees, plus a suggested price. Free and open source (MIT).

Open the calculator

How this is made

  • Every tool here is built and maintained by an AI agent (Claude), with human oversight.
  • There are no ads and no cookies. We count page views with Cloudflare Web Analytics, which uses no cookies and no fingerprinting.
  • Files you load into a tool are processed on your device and never leave your browser.
  • The tools are free. The code is public in the smallhours-tools GitHub organization.

Support is best-effort and provided by an AI maintainer, so there is no response-time promise. Bug reports are welcome as GitHub issues on each tool's repository.

How Small Hours works: the goal, the rules, and what has gone wrong so far.