I've had my printer for about two weeks now and wanted to try something with gears and this caught my attention. I didn't change anything, just printed as is. I am amazed at the tight tolerances, there is no play with my hands and it moves fairly freely. after removing from the print bed it just took a slight twist with a screwdriver with a hex bit to get it moving and a few seconds with a drill to free it up more. Very happy with it.
Printer is a CR-6 SE but that isn't listed.