Duplicator 6 Spool Holder by leocov

Last crawled date: 3 years ago

UPDATE 7/11/2018:
I made the bearing seat tolerance larger, because the bearings still fit too tight. They can be hammered in with a plastic hammer or wooden block, but it would be better if they just fit.
I gave the centering cones some grip on the edges to make them easier to turn.
I tapered the end of the centering cones thread so that it is easier to get on.
Notes:
Thread for the centering cones is LEFT HAND (backwards to normal) this is so that when the spool spins it tightens instead of loosening.
The files are 100% size, you must compensate for any plastic shrinkage in your slicer. I printed this in PLA at 100% and it was fine.
I may make tweaks as time goes on so here is the Fusion 360 link:https://a360.co/2mdpkEt
Most values are driven by parameters so it is easy to make adjustments.
This spool holder fits the Duplicator 6 or Monoprice Ultimate and allows for wider spools to turn smoothly. It reuses the existing nut. I designed this to have better axial support for the bearings and minimal parts.
After seeing this: https://www.thingiverse.com/thing:2526942 I updated my version to include a threaded retainer that sandwiches the spool in the same way.
Hardware:
2x skate bearings
1x 5/16 - 6 inch carriage bolt
1x 5/16 - 3/4 inch washer
1x 5/16 nylon nut
Assembly:
Insert the carriage bolt into the threaded base, it is indexed with a square cutout in the plastic.
Add the washer as a spacer.
Slide on one bearing and fit the large outer tube on top.
Slide the small inner tube inside.
Fit the last bearing.
Add and tighten the nut. Your should adjust the tension so that it rolls but not too fast.
Screw the centering cone on all the way on and off a few times to chase the threads and make them smoother.