MPCNC 525 RJ45 Keystone Wiring Brackets

thingiverse

I really liked B-Cup's ethernet jacks, but they aren't compatible with the newer parts. I thought I would be able to at least use them for the Z axis, but my keystone jacks were too wide to fit, so I designed new parts for ethernet cabling. The Z axis part was designed in Fusion 360. You need to drill a hole in the side to pass the cables into it - it was easier to make it print without the hole first. I recommend using a wide brim when printing it since there isn't much contact area with the build plate. Slack wire from the stepper can be hidden inside the tube, and there are small slots at the top that hold the jack fairly securely. I redesigned the endcaps in openscad. If they don't fit your EMT, you can adjust the $inner_diameter setting. The ridges on the outside are nice because you can shave them down with a knife if the fit is too tight, and I made the hole a little bigger than B-Cup's so I could leave the 4 pin connectors on some of the stepper motors. The motor mount bracket isn't pretty, but it does the job. It mounts to the top 2 screws of the stepper motor - this requires using slightly longer screws, 16mm M3 screws fit mine perfectly. mwu's keystone receiver module makes a perfectly fitting slot for the keystone, and I adapted Zappyguy111's NEMA17 motor to make sure the cutout for the rotor and mounting holes were in the right place. The bracket could be a lot shorter, but I'm happy with it.