Anet A8 manual bed leveling

this gcode is used to position the extruder near each corner of the bed and keep it there for a period of time.

i cant say this enough
**before you start the print lower the bed, because if your bed is too high this may cause a print head collision in up to 4 and possibly between each spot.**

first of all in order to use this you must modify the bed holding plate.
simply drill off the threads and use the wing nuts (or buy or print knurled knobs off here), i have had no issues with the sc