Anet A8/Prusa i3 - Z-Axis Alignment Tool

Just a simple alignment tool for the Z-Axis of the Prusa i3 Style Printers, since after every pressure on the axis (e.g. when changing filament) causes a misaligment of the Z-Axis when the stepper motors are undriven. Especially when the printer uses trapezoidal thread rod with a slope of 8mm/revolution (like Anet A8).
I use this after every filament change so I neither have to relevel my bed nor do I need the autolevel sensor.
Print two of them, one for each side.

1. Auto-Home Axis
2. Disable Steppers over the menu
3. Turn both Z-Axis rods by hand until the tool fits underneath
4. Turn each Z-Axis rod until it lays on the tool with a slightly touch
5. Remove Tool and start to print