Endcap Cam Lock for Filament Spool Holder

Add-on to Filament Spool Holders by 3DStartups. I love the hanging spool holders by 3D Startups, but sometime they came apart unintentionally. 

This end cap works as a cam lock to prevent the arm from disengaging prematurely. Cap can be pulled out with no effort, but once inserted, the spool holder locks together much, much better. Designed in F360.

v2 uses a tighter tolerance than v1, so you can remove the top arm completely. This allows the filament reel to angle/turn as needed when spooling.

Both v1 and v2 can be resized +/- 5% in your slicer to get the fit you like. Good luck!