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Ball Bearing with paused addition of BBs

by makefast, published

Ball Bearing with paused addition of BBs by makefast Sep 21, 2016
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1581Views 217Downloads Found in Engineering

Summary

This is a quick ball bearing to test adding metal parts (standard BBs) while the part it printing. Final part inside diameter is 0.25" (1/4") and outside diameter is 0.875" (7/8").

Note that the print should be paused so that the BBs can be inserted at 5.8mm high.

More info at http://makefastworkshop.com/hacks/?p=20160920

Quick notes:

  1. Heating the BBs on the 3D printer's bed can help to reduce shrinkage when added.
  2. Minimize the time you pause the print to retain strong bonding between layers.
  3. Experts: If you can reduce the feedrate on your 3D printer, consider slowing it down (~10%-20% of normal speed) and adding the BBs while it's running instead of pausing the print. Be careful! The extruder is hot and can easily hurt yourself or your printer if you get something in the wrong place while it's running.

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Note that we just uploaded version 13 which produces a more accurate ID/OD dimension for the bearing (1/4" inside and 7/8" outside).

Nice...I even like the spacers too!

I printed a few of the 608 bearings, the last BB takes quite a bit of force to push in..but work well...your design looks good as well!

Very cool design

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