Follow the instructions of the original model for print settings, the only added hardware needed is a M4*10 screw that is screwed from the bottom to the top piece. dont tighten it too tight as this will increase the friction between base and top. you can also use the screw to manually adjust the distance between the two parts to improve the rolling.
Make sure to add extra perimeters on the screw hole for the “carousel” model so that the screw has somewhere to grab to.
Model requires no support even for the base screw overhang.
The author remixed this model.
Modifyied the geometry to have a screw on the bottom secure the top part in place so it doesnt come off without slowing the spin.