Summary

The defaults and major design elements come mostly from Soft Tape Measure Spool.

Set the tape width high enough and this could probably hold a scroll.

Individual parts are set up to PIP on multiple extruders (i.e., the have the same origin and don't overlap). There's 0.2 mm space between the parts. This can be changed w/ the fudge_factor variable.

Update 05/22/2019

Replaced fragile snap fit with a screw on fit. Otherwise the functionality has not changed; once the top is screwed on, removing it is difficult, and it spins freely. It could probably stand a little oil to reduce squeaking.