CR-10 Bed Level Dial system

This is a system to level the bed of a CR-10 3D printer using four dials at the front. They turn four sets of gears which mesh with gears that spin the four bed leveling screws beneath the bed. This allows full adjustment of the bed during operation, without placing your hand under the bed (very difficult while moving). Additionally, one spin from a front dial will increase the bed height by .25 millimeters.

It works by using a square rail to transmit rotations from a front dial to a gear that slides along the shaft and is also held in place next to the leveling gear. The leveling gear fits around the hand screw that adjusts the height of the bed.

The only thing not printed is a 3/16" 3' metal square bar to act as a non-circular rail (see links below):
https://www.walmart.com/ip/WWG300187018736-Keystock-Under-36-In-L-3-16x3-16/41235139
https://www.ebay.com/itm/WWG300187018736-Keystock-Under-36-In-L-3-16x3-16-/332514230507

Shaft Gear:
Teeth: 7
Helix Angle: 60
Mod