This is a fixed height riser for the OMTech Polar.  The model is designed as a tapered cylinder with a recess area at the top for the feet to be inset.  The riser elevates the machine to the maximum height for engraving cylinders with larger diameters while still allowing for the rotary cable to reach its port.

Print 4 to make a set in whatever material and using your own preferred settings.  I chose Prusament Galaxy Black PLA using .2mm layer height, standard strength settings.