A adapter for microscope slide in a XYZR Rotation table. I did that for helping with my DIY Microscope mount.

The XYRZ mount I use is this one: https://s.click.aliexpress.com/e/_DB4LvzX

The settings and material aren't critical. But just as a reference I use 3DX PLA-HT (pretty much the same as eSUN PLA+) at 0.2mm layer height with 15% infill (gyroid). Printed on an Ender 3 Pro.