This is a 3d printable spine, consisting of 3 primary parts, a block, a link, and a connecting pin.
For assembly metal rods of roughly 1.5mm are also necessary. Small nails work for this purpose.
The holes are sized for metric 2 diameter wire, most bicycle hand brake cables, or miniature throttle cables work for this purpose.
There is also a second components which consists of a wheel and a bracket, to which a standard 37mm gear motor with a 6mm shaft can be mounted.Rankine 3d Printable Vertebra by Rankine is licensed under the Attribution - Non-Commercial - No Derivatives license.