I created this jewelry from a clipart found on pinterest.com
It has a diameter of 52 mm, a thickness of 4 mm + a ring of 8 mm with a hole diameter of... 4 mm.
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3d model print parameters
layer: 0.20
no border, no support, just a skirt to start the extrusion process.
filling: 100%.
A raft is recommended if your printer does not have ...a hot platen.