Ultimate Spool Roller [21 cup dry box compatible]

thingiverse

*I made a version 2 of this thing for spools that may need a little more width. Here's the page for USRv2:* https://www.thingiverse.com/thing:3341611 *Note if your spools fit, the tapered rollers on the original version can deliver lower friction.* Tired of adjusting your roller to fit different spool widths? Tired of spools jumping off your roller in the middle of a print? Is your current roller too big to fit in your dry box? Solve these problems and more, with the one size fits all derail proof... *Ultimate Spool Roller!* - No need for adjustments - Works with a wide variety of spool sizes (~165-215mm dia. X 0-69mm wide) - Spools will not jump off the rollers while printing - Tapered rollers eliminate side friction - Fits inside Rubbermaid 21 cup dry box containers - Can be used as a standalone roller - Easy to print (<=45degree overhangs & minimum bridging) To complete it, you will need: - 2@ printed rollers (spoolRollerRoller.stl) - 2@ printed side frames (spoolRollerFrame.stl) - 1@ printed desiccant riser (spoolRollerDesiccantRiser.stl), or printed plate (spoolRollerPlate.stl) - 4@ 608 size ball bearings - 4@ M3x6 bolts The desiccant riser is convenient if you are using Rubbermaid 21 cup dry boxes. If you don't want the riser, use the standard plate for a base, or optionally bolt it to the top of your enclosure if that's how you roll... no pun intended (70x70mm bolt pattern). Here is a link to the *PTFE bulkhead* I am using on my drybox cartridges (shown in the photos): https://www.thingiverse.com/thing:3223256 It works perfectly for my printer, which has a PTFE filament guide coming out of the heated enclosure. When I swap filaments, I plug the bulkhead with a scrap piece of PTFE, folded over with a zip-tie for easy handling, and sealed on the end with hotglue. Enjoy, and Happy Printing! Kevin [Update: I modified my flat plate design to use as a desiccant riser. This will save a bunch of filament versus the originally linked desiccant riser thing shown in the photo (8.6m vs 15.6m of filament), and it's a more elegant design (IMHO). I also increased the axle radius, since I felt the fit was a bit loose with normal (non-printed) bearings. Update2: I am almost done testing a version 2 of my roller. It will use even less filament and increase spool width capacity from 69mm to 79mm. The new design uses a slightly wider base since there was 2mm of width left to spare in the 21cup dry boxes. As such, all of the parts have changed slightly.]