As the title states, I've had the Z-axis, quite suddenly, randomly decide to 'cut out' or shut off during prints. It seems to just randomly 'let go' (normally the bed seems firmly supported by the Z-axis stepper motor) and the bed sometimes just kinda 'drops' away (as if you manually disabled the stepper motors), leaving me with a ton of spaghetti spitting out on top of a now useless half-print. There doesn't seem to be any specific trigger, that I can tell. Any ideas why this might be? I've previously been able to make prints just fine. Only thing i've recently changed is the location of my extruder; though it has successfully made prints since then too.