A simple pen holder that rotates on a bearing. Prints with no supports on any Bambu printer in less than 3 hours. Can also be printed without the base. The base is designed to use a 608 skateboard bearing. I used these. The post in the base is slightly conical, just press the bearing down for a tight fit. To use it without the base of bearing, just print the pen holder. STL's are provided in the download section.

Thanks for looking - MadMax