Not on the Maslow, but for the Maslow 
A 8mm thick acrylic sled for the 150mm c-beam spindle and an acrylic slidable dust protector for the gears.
Leaving the centre in allowed for precise alignment. The engraved grid is just for fun. No fun was it when i realised that i had to peel off hundreds of squares of the protective coat 
The workflow was ->FreeCAD → linuxCNC.
On the desktop cnc with 1/8’ 2 flute upcut bit, feedrate 1800 with the highest spindle speed.
Edit: For the grid I used grid.py from the collection of Simple-gcode-generators
It also does circular grid that could come in handy for aligning a ring-kit.