Pentagonal Rings

I wanted to make a ring to put on it aum symbol. And using FreeCAD I draw a Pentagon, cutout a circle inside and changed offset 1 mm. That was 3 step ring modelling. Better ones are possible. I rendered in Blender and uploaded for you. Resin casting with its mold was successfull and easy.

I printed more than three of them. As you see in the middle ring there are gaps. In order to fill them I reduced layer height 0,194 and over extruded very little amount of pla too. Depending on your calibration, make your tries.