Servo Linear Actuator (9g) + adjustable backlash Version

Ready to print! uses cheap 9-gram servos off eBay and 3mm screws.

The cover is optional to print. (Just keeps big stuff from jamming)

EDIT:

Some were people are having issues with the rack skipping teeth with different brands of 9g servos so I made an option that's adjustable. All that's different is you just need to drill the second mounting hole for the servo so set it for the backlash you need.

Thanks to @saimun1 for giving me the idea. They've got a remix of the original that should also work for most 9g servos. (Borrowed the gear ratio as well in the new design)

Servos:
http://tinyurl.com/htv7pnn