Pile of Failed Emmett bearings

by ChrisMagno, published

Pile of Failed Emmett bearings by ChrisMagno Mar 3, 2013
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For a little fun, I thought I would share this small pile of hockey pucks. It took 5 attempts, but I got something that seems to work.

Do not give up, it will (eventually work)

I needed to set the tolerance in the SCAD file to 0.5, and I printed it with a 0.35 J head on a Prusa Printer.

Sliced with Slic3r 0.98 .25 layer


  1. Discover the Bearing made by Emmett. stare in awe
  2. Print original STL file
  3. wait 1 hour for print to finish
  4. Discover you made a solid hockey puck with a nice planet design
  5. Blame Slic3r 0.98
  6. Try KISSlicer
  7. Discover the KISS part of the name is no longer valid.
  8. Modify SCAD file to .2
  9. render
    10 Slice
    11 Print
    12 repeat at step 8 until print works


Thank you Emmett.

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Managed to get a moving bearing at the 3rd attempt. Or should I say a workmate made it move because he wasn't afraid to use brute force :-) The diameter along the loose planets is approx. 52.0. Along the sticky planets it is approx. 51.4mm. Why don't the wheels scale together?

Way too many variables. It could be a printer thats not 100% calibrated, it could be the slicing software, maybe your nozzle oozes too much, and things just "stick" I'm glad you got one to work. welcome to the Fail Pile club. :)

Hahahaha lol (know how you feel - having similar fun with a Flashforge Creator (Chinese Makerbot Replicator) got one to work though - yay!

Added my own "copy". I'll get to it someday

Emmett, Thank you. You keep me in awe with some of your designs. I love the way you think. Keep up the great work.

LOL. I got it on the 3rd try, and was going to give up soon. I ended up printing at .27 with .30 tolerances. It is a little loose, but works great. I am going to print 3 more and used them for wheels to build a big balloon car I think.

You're welcome. Nice job getting it working.

Dude i feel your pain

I'll make a derivative soon using my failed rubber band airplane attempts!