Just another spool holder

First off, let me please ask that if you like these designs and find them useful please do like, follow and share my content. And if you have any ideas or concepts to modify the content I would love to hear!

I designed this spool holder to mount to a $2 plastic container purchased from a cheap variety store. The internal hub will be able to mount within most container shapes, though the outlet may need to be redesigned to suit (I will amend at a later date) a flat outer perimeter, as the container I purchase is taper slightly.

The centre hub is 45mm outside diameter and 75mm wide. The end cap screws in to locate the spool and stop it from wandering off the holder. The outlet has a 9.5mm hole for use with ~10mm pneumatic fittings. The one I have pictured is for 4mm ID teflon tube. I like to run a teflon tube directly to my printers extruder from the enclosed filament holder so as to protect the filament as much as possible.

In future design amendments to this I wish to add a f