Sienci Mill One - Z Axis limit switch bracket and stop block

I designed this Z Axis limit switch bracket in OpenSCAD to mount on my Sienci Mill One CNC mill.
It doesn't come with end stop limit switches, but the firmware is already configured to use them if present.
I created an Instructable with details on how to wire and mount the switches
https://www.instructables.com/id/Add-Homing-Switches-to-a-Sienci-Mill-One-CNC/