In my MPCNC Primo (F) build I used 18mm electrical conduit for cable management, to prevent issues with dust and to ensure safe bend radii.

These parts are all designed to clamp around the ribbing of the conduit to lock it in place and provide smooth surfaces for cable entry and exit.

There are 3 parts:

• Direct
  • This is a two-part print (Direct_Outer & Direct_Inner) that is simply zip-tied to the motor. This clamps the conduit in place and keeps it on the motor.
• Straight
  • This is a two part piece (2 copies of Straight") that clamps the conduit which itself runs through the pipe, this is to avoid any burrs or stuff within the pipe
• Angled
  • This again is a two-parter (Angled, print two copies but make sure one is mirrored in your slicer) that clamps two conduits at an elbow and directs it away from the motor.

I suggest installing Angled first to prevent clearance issues with the Direct attachment, especially on the X-Axis.

More information on the build can be found on the forums :
https://forum.v1engineering.com/t/new-build-in-bordeaux-france-2021-edition/28241