The Mechanics ring for all engine lovers a detail and unique Engine working piston ring.
The piston is a moving part on the rings top cylinder, it moves by rolling the top gears back and forwards, gears can not move all around as there is not a camshaft on the gears.

Ring sizes inner diameter – 20 mm,

Recommended material - silver or gold!
Approximate metal weight (for ring size 20 mm):
gold 14k – 15.9 grams;
gold 18k – 19 grams;
silver 925 Sterling – 12.8 grams.

Model volume (for ring size 20 mm): 1226.46 cubic mm.

Also added another version of this ring - which differs slightly in the way of assembly and appearance(Ring with piston and patterns Update Variant 3 (New)).

Model avalible in STL format for prototyping.
Geometry is healed, and fixed all the bad with RP Magics software
You can check out my other products by clicking on the author name artchagur.
Any questions? Please contact me.
Thank you!