With the machine homing properly now we will set the Z height of the machine.
Click the knob and go to Advanced Settings and click the knob. Scroll to Calibrate Z Height and click the knob. Scroll to Home towers and click the knob. The machine should home to the top of the machine, tap the endstops, back off and tap them again and back off a few millimeters.
Make sure the bed and the nozzle are clean.
Click Z Position and scroll the knob to lower the nozzle towards the glass. Stop when you get about 10mm above the glass. See Pic 1.
Scroll the knob VERY SLOWLY to lower the nozzle the rest of the way to the glass. Slowly lower the nozzle until it is just barely touching the glass or just before it touches the glass. See Pic 2.
Click the knob and scroll to Set new Z=0.00 and click the knob. The LCD should beep.
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