Basically it was working great for ages then all of a sudden the pin dripped and snapped during a print, so I replaced the BLtouch clone and now everytime I do the following
In slow steps, lower the print head until you have reached the correct height from the nozzle to the heating bed (place a piece of paper or receipt in between).
Read out the current position with M114 (the Z-position is your Z-offset which is necessary for the BLTouch)
Enter the M851 "Z value" (e.g. M851 Z-0.5)
G29, G1 X110 Y110 Z5 and check the z reading its a different value and can be well off from the previous value.
I thought I would do it one last time and do a print and the first layer of a print is too close to the bed on one side.
This seems to change everytime I do a G29 command and the Z height changes..
Basically it was working great for ages then all of a sudden the pin dripped and snapped during a print, so I replaced the BLtouch clone and now everytime I do the following
G29, G1 X110 Y110 Z5 and check the z reading its a different value and can be well off from the previous value.
I thought I would do it one last time and do a print and the first layer of a print is too close to the bed on one side.
This seems to change everytime I do a G29 command and the Z height changes..
Any Ideas?