Made from scratch, but inspired by design from Nicholas Piegdon:
https://www.youtube.com/watch?v=8qTx_9HK7IM
Used 3D scans from:
https://bitbuilt.net/forums/index.php?threads/xbox-duke-oem-controller-scan.3824/
Updated to use less materials and print a bit faster.
The author remixed this model.