Been working on some upgrades to the dev kit for a bit, the draft documentation is out---rough around the edges but all the files are there for fabrication. The cell can now close with a simple C-clamp which is much more ergonomic and resistant to leaks. Most of the parts are forward-compatible.

https://codeberg.org/FBRC/RFB-dev-kit

https://fbrc.codeberg.page/rfb-dev-kit/