Beseler Enlarger Focus Extension Knob

This a replacement knob for MX Beseler enlarger to aid in focusing.  It requires a focus whip.

https://www.amazon.com/Fotga-Flexible-Speed-Crank-Follow/dp/B00KBTQJ0K/ref=sr_1_3?keywords=follow+focus+whip&qid=1664056902&qu=eyJxc2MiOiIyLjg2IiwicXNhIjoiMi42OCIsInFzcCI6IjIuMjUifQ%3D%3D&s=photo&sr=1-3

I made this awhile ago and my crappie memory seems to think it's a tight fit getting the knob on the enlarger shaft, I believe I heated mine a bit before pressing it on.

I included the fusion360 files if you want to alter it.