1) .Stl and .obj files are attched herewith. 2) The Ring is solid and is suitable for investment casting. 3) The total polygon count of mesh is 0.5 million. 4) Volume of the closed solid = approx 255 mm3.5) Mesh is fixed and is 3d printable and castable. 6) The Current size of the ring is 16.5 mm. 7) Need any help , ready for modification.