Due to the great success of these anti-stress rings, I am adding more. No supports are required. If you need to change the size, set larger percentages.
Use a drop of oil for better rotation :)
Nozzle-0,25mm
Layer height-0,10mm
V1: https://makerworld.com/en/models/32472
V2: https://makerworld.com/en/models/36691
V4: https://makerworld.com/en/models/38356