You can print at .2mm for better results, but will also work at .3mm
MAKE SURE to print the screw with 100% infill for strength.
Cap and bottom are ok with 20% or more infill.
Fits my little over 3 foot long charger cable.
To wind up: Thread screw through bottom. Add your cable. Screw on the cap slightly. Then hold the bottom and turn the cap until completely wound up. If it gets too tight, loosen the screw just a bit, then continue turning the cap while holding the bottom. Be careful to not overtighten so that you don't break the screw.
To unwind: Loosen the screw a little then pull on both ends of the cable.
The author remixed this model.