I got an Anet A8 for Christmas.
I am trying to print a calibration tower and the z axis stops lifting at approximately 100mm.
I checked that the gantry is able to travel along the full length of the threaded rods, and while resetting the bed height I noticed that the LCD display showed the extruder height above the bed. It reads 0 at home (good) but goes back to zero when I manually turn the rods so that the gantry goes above the heigh at which the print stopped.
Any thoughts on what to check? I am double checking all the mechanical bits (connection to stepper coupling, ease of turning, etc...).
My slicer is Cura 3.1.