Setting Z axis height (1 reply)

I have had great problems using the IR sensor to set the bed height as described in the instructions.
I find it is much more reliable to set the Z axis height manually. Now I have done this am able to do succesful prints most of the time.

These are the instructions I have written for myself:

Setting Z Axis height

1.Ignore the IR sensor and set height by hand each time the Duet is powered up.

2. Type in M561 THIS IS IMPORTANT AS IT CANCELS THE Z HOMING ON THE SD CARD

3.Then set the Z height as you want it i.e close to the bed.

4.When it is correct height type G92 Z0.

5.Lift Z probe a couple of mm and then type G1 Z0 to check it returns to the position set

6.Then open SD card on Pronterface and select setbed.g

You are now ready to select file from SD card and print