Turntable for slowly turning your awesome things! ;)

Hey,
here is a small, easy to print box with a turntable for a slowly turning geared motor.
The outer dimensions are 80mm and the screw holes match to the following motor from ebay:
https://www.ebay.com/itm/12V-DC-3RPM-High-Torque-Electric-Geared-Box-Motor/172311966209?hash=item281e97f201:g:hfkAAOSwbwJaDw0F
or
https://www.ebay.de/itm/322564437956?ul_noapp=true

It's made for a 12V Power supply, but I use it with a 4,5V USB-Adapter and it works just fine.
Mine takes about 40s for a 360°