What the "Z=0" function really does...

[cliffyk]

Nice post. I have been running z0 off of the sheet of paper and not raising it then zeroing. I haven't had any problems doing this.

I suppose this raising the height method could maybe be used to cure the elephants foot if some material is going to be removed off the bottom of the model anyway. Idk?

Using "Z=0" without manually raising the trolley just sets the logical zero position to coincide with the mechanical zero--I.e. it does nothing that the firmware does not do by itself.

I have never used it ("Z=0") so I cannot comment as to it's effects. I have not found the mechanical alignment process to be so bothersome as to prevent my doing it periodically.