Herringbone Rack and Pinion for Servo

I made these in order to animate projects that use servos. I use the Hummingbird Duo microcontroller.


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I remixed the rack and pinion from Alexander Pruss (apruss on Thingiverse), who remixed it from jannsen86.


I made two racks, one of which might suit your project better. Each has its own brace style. The pinion stays put on the servo without a screw. You can see an early attempt in this quick video:

Materials and methods

I printed these at low quality without support on my Ultimaker 2+, and they work well.



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14a5aa9f002724cfdc26d4246a356c67?default=blank&size=40Daniel Garrido added this to the Mecanica collection ago
Ac80d506490a3b166fc42c21cab7dda9?default=blank&size=40joma added this to the tools collection ago
2a6ce617779e3363b9ae54cd6bda195a?default=blank&size=40MMER1116 added this to the Tool Kit collection ago
Fe5e1a57d763234c8f459ea21a929ad6?default=blank&size=40PeacefulDragon added this to the Lovely to have collection ago
Ba5c53dfbf484e655eb714b67505a13e?default=blank&size=40Thorpscu added this to the Hummingbird collection ago
69dd0df0de55b2a09221d534a79af0c4?default=blank&size=40Etherlon added this to the Belt's Gear's Pump's Motor's collection ago
13f72515cbeb9d3085b3fc7aac25de25?default=blank&size=40Kirill added this to the Things to print collection ago
Mini 20150127 093625RCCM published this design ago