V2.1
–
TH3D EZABL
™
Pro Installation Guide -
Copyright © 2021 TH3D Studio LLC
–
ALL RIGHTS RESERVED
17
Setting your Z Offset
I HIGHLY recommend you watch the video as it is much easier to see what to do. Here is a video
on how to set the Z Offset:
https://www.youtube.com/watch?v=IP-UHn7_yqs
Now that we have the sensor installed and calibrated you need to set your Z Offset. This is the
distance the printer needs to move the head down to place it on the bed after the sensor
triggers.
To set your Z Offset heat the bed to your normal print temp and do a G28 to home the sensor.
Your
EZABL
™
Pro sensor
should be in the middle of the bed. Let it sit there for 1 minute after
the bed has reached its target print temperature. After homing the Z will show 5mm. This is
NOT included in the ZOffset. Move Z down 5mm before proceeding.
What you will do now is grab a sheet of standard paper and then move the nozzle down by
0.1mm until it just grabs the paper. Once you do that you can look at your printer LCD and note
the number that the Z shows. This will be a negative number. That is what your Z Offset is.
Enter that number in the ZOffset section using your printer LCD, look for Probe Z offset. This is
located under Menu>Control>Motion. Make sure you store your Z Offset by going to
Menu>Control>Store Settings.
If you do not store your memory the Z offset will be forgotten
when you restart the printer.
Now do another G28 command. The Z should show 5mm still but if you notice it will be 5mm as
the offset is considered when homing Z.
You can now move the nozzle down 5mm and it should be grabbing the paper. If it is too high
or too low you can further fine tune your Z Offset by increasing or decreasing that number. We
recommend using the babystepping Z feature below to fine-tune on your first print.
When printing if you are getting it starting too high or too low press the printer menu button
2 times while printing and it will bring up the “
Probe Z Offset
” menu
. You can then turn the
knob left to bring the nozzle closer to the bed in real time or right to move it further away. It
is NORMAL to have to babystep a little especially when changing bed temps. If the resulting
1
st
layer is level after adjusting the 1
st
layer height then the probe is working correctly.
If you notice that you ALWAYS have to babystep a certain amount every print then add that
to the Z offset. Lets say you have to babystep -0.2mm and your offset is -2.0. You can change
your offset to -2.2mm and store it.
