Rollerspooler

prusaprinters

<p><i><strong>Rollerspooler </strong>is the latest in TUSH-Varientalology, using the base Idea from the original </i><a href="https://www.thingiverse.com/thing:2047554"><i>The Ultimate Spool Holder </i></a><i>(by filamentry) then adding the Clamp from the original </i><a href="https://www.prusaprinters.org/prints/57217-i3-mk3s-printable-parts"><i>Prusa Spool Holder</i></a><i> (because, why reinvent a perfectly working wheel?) to mount it to a Prusa i3 MK3S+ Frame.</i></p><p>This is probably more <i>industrial art</i> than an honest attempt at creating something primarily useful.</p><p>There are many popular takes on this very combination of ideas, but if you like something new and purposefully different, then this the one for you.</p><p>Still, if you don't like the idea/insanity of something that looks like it shouldn't work as good as it does, you can just print it with default settings and have a working filament roller.</p><figure class="image image-style-align-center image_resized" style="width:50%;"><img src="https://media.prusaprinters.org/media/prints/113488/rich_content/1bf62ff0-f86d-4bad-bc59-214902a7eaf7/screenshot-2022-01-05-184336.jpg#%7B%22uuid%22%3A%22e7976686-d2f8-42de-a3d7-41c14112b2db%22%2C%22w%22%3A1647%2C%22h%22%3A1096%7D"></figure><p><i>The dark areas of the model on the Image shows how much more could be removed without sacrificing any of its stiffness. Even more could be removed if the Validation/Analysis/Study wouldn't require a Safety Margin of five times the projected weight of 2 kg.</i></p><figure class="image image_resized" style="width:50%;"><img src="https://media.prusaprinters.org/media/prints/113488/rich_content/74c61c5a-2a45-433d-9571-ddbcd2bac183/screenshot-2022-01-05-185729.jpg#%7B%22uuid%22%3A%22e1af6881-9804-4dc7-823c-fa412030744f%22%2C%22w%22%3A1587%2C%22h%22%3A1185%7D"></figure><p><i>So, this should easily hold the probable normal strain of 1 kg.&nbsp;</i></p><p>&nbsp;</p><h3>Instructions</h3><ul><li>Print two sets of left/right each<ul><li>0.3 mm / Draft Settings</li><li>No Top/Bottom Layers</li><li>3 Perimeters (makes screw holes more stable)</li><li>Variable Layer Height if you like</li><li>20% Gyroid Infill&nbsp;</li><li>Add a Range Modifier for 5 mm up and re-enable Top-Layer to make the Top Surfaces look neater</li></ul></li><li>Prepare (per set)<ul><li>2 — 608 Bearings<br>&nbsp; <i>or any bearing with an inner diameter of 8 mm and depth of 7 mm</i></li><li>4 — M4x20<br>&nbsp; <i>Longer Screws can be used</i></li><li>4 — M4 Nuts<br>&nbsp; <i>Lock nuts can be used but are not necessary</i></li></ul></li></ul><h4>How to mount</h4><ol><li>Place 608 Bearing on Spacer of right Side<ul><li>Bearings should have a tight fit but should seat without force</li><li>If the Bearing would require force to go on, check for burs or if it sits canted</li><li>Place printed Part flat on Table and press bearing on, not the other way around</li></ul></li><li>Place left Side on right Side</li><li>Insert 4 M4x20 Screws through right Side</li><li>Add M4 Nuts to left Side</li><li>Tighten without inhibiting rotation of Bearings<ul><li>Screws are only there to keep alignment between the two halves, no need to crank them down</li></ul></li></ol><h3>FAQ</h3><ul><li><strong>Isn't there a large amount of side flex without the walls?</strong><ul><li>No. Especially not after having it sit on the Frame and screwed together, and also never to a point where it could have realistic impact on doing its job</li></ul></li><li><strong>I don't have any Hardware on Hand, what should I do?</strong><ul><li>Use PrusaSlicer to make dowels from cylinders with a diameter of 4.5 mm and a length of 22 mm. They should naturally fit snugly enough to not fall out.</li><li>Alternatively, you can add these dowels directly to one side of each set before printing. Take your time to align them properly.</li></ul></li><li><strong>The Screw holes are just hanging in there! That can't be safe!</strong><ul><li>The Screws are just there to align the set and keep the layers within the bearings from shearing off.</li></ul></li><li><strong>If the Filament gets caught on the spool, isn't the Spool dragged right off?</strong><ul><li>The filament is more likely to be sheared off inside the extruder before there is enough force on the spool to tip it off.&nbsp;</li></ul></li></ul>