Saturday, March 17, 2018

Root 3 CNC - Z-Axis Front Panel

Relevant official documentation can be found at: https://rootcnc.com/machines/root-3/animated-assembly

For the Z-Axis front panel support assembly, I used:

  • 2x 3D Printed Root 3 CNC Parts
  • 4x 608zz skate bearings
  • 2x M3 x 20mm screws (0.5mm threads)
  • 2x 3D Printed Custom Plugs
  • 1x T8 L350mm 8mm Lead Screw and T Nut


The custom plug is one I added to the design to compensate for loose bearings in the top and bottom cup parts.  The plug was made to snap into the bottom of the cup, to help keep the bearings from falling out.  The files for the custom plug were uploaded to Thingiverse at:

Root 3 CNC Z-Axis Bearing Cup Plug
https://www.thingiverse.com/thing:2829391


The animated video on the official site shows all the details necessary to assemble the panel.

Note that Loctite Thread Locker (Blue 242) was used to help keep the screws from shaking loose from the rivet nuts.  I also wound up using Loctite Gel Super Glue around the top bearings as well as to weld the custom plug onto the top and bottom cups.  Before using the glue, make sure to seat the lead screw so that the skate bearings are all properly aligned.


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