Solidoodle 2 anti-backlash assembly for aluminum z-axis carrier

This is a two-piece anti-backlash assembly I created for the Solidoodle 2 (and perhaps the Solidoodle 3?). It threads onto the z-axis lead screw from above and mounts to the z-axis carrier using existing holes. The spring and fasteners were sourced from my local hardware store, so the design was somewhat dictated by what I could get my hands on over the weekend.