Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:5330326.

I needed a tray to keep the 3d printed spinners falling off the table. I created the large version (diameter: 135 mm , edge 6mm) and a small version (diameter: 70mm edge 6mm ) . Ideally should be printed with silk PLA to keep the surface smooth. I also increased the top layer count to 3 to keep the top sturdy with minimum infill