Yet another rewinding spool holder

thingiverse

This is a remix of an awesome spool holder created by Vincent Groenhuis, available at https://www.thingiverse.com/thing:3252111 and https://www.thingiverse.com/thing:3338467. The spring, spring guard, and clips are reused from this original design and not included here. To complete this remix, you need a 100mm diameter spring and spring guard, as well as clips for an 8mm axle from Groenhuis' design. It is designed to be used with the axle stands found at https://www.thingiverse.com/thing:3227387 or similar products. The primary purpose of this spool holder is to provide a single setup that can accommodate various spools, within reasonable limits. It supports inner diameters between approximately 48mm and high 50s, and spool widths up to about 100mm. Fine-tuning friction is essential to avoid under-extrusion and similar issues while maintaining enough friction for the rewind to work. Instead of making the spool parametric, we've tried to create a universal design (more or less). The current remix uses a 146mm axle length, which is the spacing required between the stands. The cones and expanding "fingers" allow for perfectly tuned friction with most common filament spools, as well as tuning adjustments as the spool weight decreases. Non-printable components include: * 2x ball bearing (22x8x7) * 2x F28 o-rings (37.69 ID x 3.53mm cross-section) Credit goes to Morten Aase for co-designing this concept.