MK4.5n

All parts are designed to print with ZERO support material. The main body prints at an angle with the front surface facing down. This provides a convenient place to add text or imagery if your printer supports changing colors:

There are two paths for the encoder wiring, straight out the back to an integrated zip-tie mount, or through an internal channel toward the motors. 10-32 nyloc nuts can be installed in internal channels to provide mounting holes on the back for mechanisms or electronics:

A small shield piece attaches to the lower plate with a 10-32 nyloc nut and screw to fill the gap around the motors, keeping the grease in and protecting it from dirt and carpet debris:

View of the inside during assembly: