popkern is free and always will be. If it's useful to you, or you just want a great open CAD kernel to exist in the world, chipping in really does help.

Building popkern costs real money every month, mostly for the AI agents that write the code, plus a lot of my time. Every bit of support goes straight back into the kernel.

Sponsor monthly

A small monthly amount keeps the agents running and lets me plan ahead.

Sponsor on GitHub

Chip in once

Buy popkern a coffee, or a few hours of agent time. Every bit counts!

Chip in on Ko-fi

Can't chip in? No worries at all!

None of this has to be money. These help just as much:

  • Star the repo. It helps more people find popkern.
  • Use it. Build a part, then tell people it exists.
  • Break it. If popkern can't build your part, open an issue and it becomes a test case.
  • Join the Discord. Ask questions, share what you build, and talk shop.
  • Follow along. On Bluesky, X and Reddit.
  • Pass it on. To anyone who makes things.

Thank you, truly. ♥