This model was designed to work on a flat surface. You'll need 4 pieces of U604 4 * 12 * 4mm bearings to make it work.

It has been designed in sketchup and converted in several formats just in case you want to edit it.

I'm adding an stl format that was saved with the requirements to print on an Ender 3

The presets are in STANDARD QUALITY. I experienced a very good printing with this settings, but if you want a better finish I sugest you to print it in super quality or dinamic quality. There are no support nor plate adhesion.

Temperature was set for PLA at 200° on the nozzle and 60° on the printing bed. This settings are the best for my printer.