Prusa Bed Leveler Gauge

Use this Prusa Bed Leveler Gauge together with the NyLock Mod" (//www.reddit.com/r/prusa3d/comments/bp440f/full_guide_to_doing_nylock_mod_if_you_havent_you/) and the "Bed Level Visualizer" Octoprint Plugin (https://plugins.octoprint.org/plugins/bedlevelvisualizer/) to PRECISELY dial-in the clockwise/counterclockwise screw adjustments on each of the 9 bed leveling screws.

Instructions:

1. Printed using Inland PLA+ @0.20mm level height
2. Used manual color change @11.80mm (e.g., from white to black) so that embossed numbers and hash marks show up and contrast more clearly against the body background
3. Both the inner wheel and the outer compass print in-place. Be sure that they spin freely relative to each other
4. Insert the short end of the 2mm hex wrench (included with the Prusa printer) into the center hole, all the way
5. Make sure you have installed the NyLock Modification as per above link

Usage:

1. Run the Octoprint Bed Visualizer tool
2. For each of the 9 matrix points corresponding to the underlying screw:
   • Align the long arm of the hex wrench with the long START hash mark (at 0 degrees) – to the left/right of the mark if dialing in positive/negative degree changes, respectively (i.e., if you need to turn screw CW/CCW)
   • Hold the outer compass part of the gauge stationary and turn the long arm of the hex wrench CW/CCW the number of degrees indicated
3. Run the Octoprint Bed Visualizer tool and repeat as necessary. Note that it is unlikely to get it perfect the first time as the screws are not independent so even if all 9 are adjusted precisely it will take one or more future iterations to converge on the maximally flat solution.

Note: 

• Long hash marks occur every 30 degrees, short hash markets every 5 degrees
• The attached Fusion360 model is fully parametric, allowing you to change just about all the key dimensions