Welcome to the Commons

This tool exists to make filmmaking equipment more accessible, repairable, and shareable.

Generate custom follow focus rings locally—adapted to your lenses—without subscriptions, accounts, or lock-in.

Why this exists

Technical tools should serve people, not extract value from them

Professional gear is often overpriced, proprietary, or designed to be replaced rather than repaired.

This tool is an alternative:

• fabricate locally
• adapt instead of discard
• share knowledge instead of extracting value

Values note

We ask that this tool be used in ways that support learning, creativity, and community. It is not intended for surveillance, coercion, or extractive practices.

Sharing & attribution

You're free to use the generated STL files commercially.

If you share or sell prints, please credit where the tool came from (a link is enough).

Support

This project is free forever. If it helps you, consider sharing it or leaving a tip: