This is what I sometimes do, transfer a bit of filament to a mini roll. There are a few decent files out there for re-spooling out there.
As environmental shakey 3d printing is, I am happy to be inconvenienced by cardboard spools, as that is one disposable things we can make not-plastic.
I always print slow with it. The tiny heated bed uses so little power, maybe only 5p per hour to run, Vs my rating which was costing me 20-30p per hour :|
I could get threaded rod up to 700mm, and the v slot 20x40 v slot could be cut to any length.
The “hardest” part was all the new cables and connectors needed. The printer uses 2 types of connectors for stepper motors and end stops, even though I purchased a few meters of ribbon cable.
I tried upgrading the extruder motor, but sadly the old ender 2 you can’t easily adjust any of the settings like esteps or pid tuning.
I have had cardboard spools for a while. I am on the fence. They are much easier to recycle (no matter how many 1million and 1 uses for plastic spools exist). however they creak horribly on my spool holder, and are much larger than most of the similar weight poly spools i have, so i had to create bespoke spool holders for all 3 printers i have!
Snap, I think I have the same camera, and wanted to mount it in a similar way, poking out the top corner of a window.
British Pence. 5p = £0.05