this is my design for a minimalist bolt ring. i think its pretty cool
maybe give it to a mechanic?
it is a size 17 ring (Diameter 17.12, EU 54, UK N, USA 7)
it is 3d printable
I have made it available in as many formats as I could. It was rendered in RHINO.
please see the images for weighting and dimensions.
the geometry count is done from the obj file
I hope it suites your project well
:)