Fast Print !!

Print setting with my Ultimaker 2:

0.06 mm layer
50 % infill
Speed 50 mm/s

Take about 15 mn

You can adjust the size for your finger , default is 65 mm for ring size ( diameter 2.06 mm and 65mm for perimeter )

also check out my other designs
https://www.thingiverse.com/Syzguru11/collections/myrings