Auto Rewinding Spool Holder

prusaprinters

<p>This is a low profile, easy to print, and <i>hopefully</i> improved version of the Auto-Rewind Spool Holders created by Vincent Groenhuis.&nbsp;</p><p><strong>Features:</strong></p><ul><li><strong>Adjustable friction clutch for consistent tension from beginning to end of spool</strong></li><li><strong>Able to rotate 4-5 full rotations&nbsp;</strong></li><li><strong>Bi-directional</strong></li><li><strong>Doesn't need supports to print, and is as flat as possible</strong></li><li><strong>Variety of centering rings and spacers to fit any brand of spool</strong></li></ul><p>This spool holder is technically a remix but really is a complete redesign from scratch based off concepts from Vincent's Universal AND <a href="https://www.thingiverse.com/thing:3781815">Integrated</a> Auto-Rewind spool holder.&nbsp;</p><p>In otherwise really good models, the issues I found were that the Universal was a bit too big and wide for the space I had, and the Integrated was the right size but relied on friction between the spool and hub instead of a clutch which was inconsistent for rewinding. I recreated the clutch mechanism from the Universal and fit it into the hub of the Integrated spool holder.&nbsp;</p><p>The selection of center rings and spacers should allow you to fit just about any spool, but I do occasionally find a spool where I have to mix and match sizes. Centering rings are marked with diameter and width for the spool opening they are designed for (Ex: D55-W68), but having a range of spacer heights will help bridge any gaps.&nbsp;</p><p><strong>Please read the Guide! It's only 3 pages (mostly pictures) and will show you how to assemble, test, and troubleshoot.</strong></p><p>&nbsp;</p><p><strong>PART SETS&nbsp;</strong></p><p>To reduce the file count I have made 3 sets (saved as .3mf), you can split each set into separate parts if you need to print individual parts</p><ul><li>Auto Winding Hub</li><li>Stand and Filament Guide&nbsp;</li><li>Centering Rings and Spacers</li></ul><p>(the filament guide is the only part that needs supports unless you have incredible bridging)</p><p><strong>REQUIRED</strong></p><ul><li>Good bed adhesion</li><li>Decent bridge and overhang printing</li><li>&lt;5% error in X and Y dimensions (your circles can't be ovals, otherwise you'll have a bad time)</li></ul><p><strong>PRINT SETTINGS</strong></p><ul><li><strong>No Supports, no Brim</strong> - you really shouldn't need them</li><li><strong>No “Detect Thin Walls”</strong></li><li><strong>≤ 0.4 mm extruder width</strong> - this was not designed for &gt;0.4mm extruders</li><li><strong>0.2 mm layer height</strong> - 0.1 mm for thinner parts if necessary</li></ul><p><strong>PARTS NEEDED</strong></p><ul><li>2x 608 bearings - I use <a href="https://www.amazon.com/gp/product/B07R11PBZ8">these</a>, they are cheap and good</li><li>Rubber feet/bumpers - to keep the stand from sliding if you have a smooth surface</li></ul><p>&nbsp;</p><p>&nbsp;</p>