DASH: Dual Adjustable Spool Holder

prusaprinters

<p>This spool holder originates from <a href="https://www.prusaprinters.org/social/7-dominik-cisar">Dominik Císař's </a>work in the <a href="https://www.prusaprinters.org/prints/17-original-prusa-i3-mk3-enclosure-ikea-lack-table-pr/comments">Original Prusa i3 MK3 ENCLOSURE - Ikea Lack table - Prusa Research</a>. &nbsp;Subsequently, <a href="https://www.prusaprinters.org/social/46685-necko">Necko</a> released a remixed version of the spook holder leveraging 608 (skateboard) bearings. &nbsp;I further modified that work to allow adjustment of both sides of the Spool holder for easier centering. &nbsp;I also scaled the bearing wheel down by 3% as Necko's version seemed far too loose. &nbsp;I mean it would have worked but as long as I was working with it, I may as well make it more perfect.</p><p>I do recommend you get decent bearings for this, as the cheap Chinese bearings can be pretty sub-optimal. &nbsp;Also, I printed the Bearing Wheels (the part which surrounds the bearings) in NinjaFlex to provide a little grip and cushioning.</p><p>With <i>both </i>of the carriages siding/removable, this can be used for smaller spools like the ones Prusa sends with upgrade kits and some TPU spools. &nbsp;Be sure to use the intended countersunk screw heads or else you will not be able to take advantage of this feature.</p><p>A complete printed model for one spool is made up of:</p><ul><li>1 x Bearing Carriage Track</li><li>2 x Bearing Carriage</li><li>4 x Bearing Wheel</li><li>4 x Bearing Axle Cap</li><li>4 x Bearing Axle</li></ul><p>If you plan to print everything in a single print (without the NinjaFlex wheels) you may print one of the “Dual Adjustable Spool Holder” model which contains all of the pieces for one setup.</p><p>You will also need:</p><ul><li>4 x 608 Bearings</li></ul><p>The Bearing Carriage Track is affixed with 2 each #6 x ¾" flat-head screws.</p><p><strong>Update on 4/21/2021:</strong> &nbsp;Since <i>someone</i> decided to rate the entire project one of five stars because they don't understand 3D printing and clearances, I have modified the Bearing Wheel. &nbsp;There are now two versions:</p><ul><li>TPU Bearing Wheel</li><li>PTE Bearing Wheel</li></ul><p>The differences are very slight, the PET is slightly larger. &nbsp;I guess now I need to warn everyone to do a test print on things that must have exact clearances. &nbsp;I'm betting cheaper bearings may not be precise. &nbsp;I know for a fact different printers are not always calibrated perfectly, and different materials may shrink when cool.</p><p>This is why we calibrate our printers, and this is why we are able to scale prints.</p>