This is a desktop display for Emmett's screwless cube gears.
The original cube display that this is based on requires supports to print properly. I redesigned the model to print flat on the bed, and give you an optional top surface.
You can use the test print to make the parts that press fit together if you want to test your printer settings before making the full version.
Print the model which includes the base and holder arm. Choose which finish you want on the base:
Flat from the printing surface -or-
The somewhat honeycombed or dimpled top surface, depending entirely on your infill and top layer settings.
The base in the photos is plate side up, so the honeycombed surface is down toward the table.
Press the arm into the hole, checking with your printed cube until the fit is snug, but not too tight.