Adjustable Filament Spool Roller for Ender 3 with Increased Tolerance
Description
https://www.thingiverse.com/thing:3789524 JDs_Work designed this filament spool holder because they didn't like the way the original spool holder does not hold the spool centred on the axis of rotation (and neither did I). The holder is compatible with 33mm to 63mm inside diameter filament spools. I have now created an improved version which supports up to 90mm inside diameter spools here: https://www.thingiverse.com/thing:4951629 This self centring spool holder does not require any additional parts, components, or hardware other than the original bracketry which comes with the Creality Ender 3 range of 3D Printers and any other accessories you choose to use with it (i.e. a side mount bracket). It may be suitable for other printers depending on your existing bracketry, if you have a bracket which is flat with a ~30mm opening for the spool holder then this should fit. I have modified the nuts from JDs_Work's original files to increase the tolerance in the threads by 3% without changing the thread pitch, allowing the spool holder to be printed with a 0.4mm Nozzle with 0.2mm Layer Height, no supports on most of the parts (apart from the "Main Support" which requires supports on build plate only) and with minimal cleaning/post-printing steps. Despite the extra tolerance I would still advise that your printer is well calibrated and your slicer compensation is on point as the main feature of this design is threaded components which need to interface well.
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