The Z Offset is what determines the distance between the print surface and each nozzle. A well-calibrated Z offset will yield great first layer adhesion and your models will be printed accurately. A poorly-calibrated Z offset may cause warping (when the model doesn't stick well because the nozzle is too far away from the print surface), elephant foot (when the nozzle is too close to the print surface and could cause clogging of the nozzle) or other defects.
Before we start
- Make sure the glass build plate is clean from plastic
- Load PLA Tough in Extruder I (required for the pre-installed calibration test)
- Load PLA+ in Extruder II (required for the pre-installed calibration test)
- Use a different color than the one loaded in Extruder I if you want to do an XY (dual nozzle) calibration later
- On the touch screen, go to Setup » Calibration » Z Offset Calibration.
- Adjust the Z Offset of Nozzle I by pressing the up or down arrow while sliding the provided calibration card between the nozzle and the print surface. (You should aim for the tightest setting allowing the calibration card to slide between the nozzle and the print surface without any obstructions.)
- When you're done calibrating Hotend I, do the same for Nozzle II.
- Press Done and allow it to save your settings. You will be returned to the main calibration menu when it's done.
- Power cycle the printer. Wait 15 seconds before turning the printer ON again.
- To check the results of the calibration you'll need to do some test prints. Go to Print » Print from local file » Calibration files.
- Print Z Offset T0.gcode for Hotend I and Z Offset T1.gcode for Hotend II.
If results are good, you're done. If not, start over from step 1.
|Too close||Perfect||Too far away|