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Table of Contents
Z Offset
To be clear, this is a discussion about the gcode z offset, an adjustment to nozzle height from the plate. (It should not be conflated with the probe z offset.)
The gcode z offset is set with the SET_GCODE_OFFSET klipper command and you should read its documentation, at https://www.klipper3d.org/G-Codes.html#set_gcode_offset . All other methods of changing the value just equate to this command. You can set it to a absolute value like SET_GCODE_OFFSET Z=0.075 or adjust it relative to its current value like SET_GCODE_OFFSET Z_ADJUST=0.030
How should you determine and set the z offset to adjust nozzle height?
Other gcode z offset resources
| Page | Description |
|---|---|
| How should I set the Z Offset to adjust nozzle height? faq z_offset Answer: The best method is by observation for the proper filament squish while baby steps adjusting the z offset value during a test first layer print. Discussion: Filament Squish? Huh? (work in progress.. in the mean time see | |
| Layer Height Composition about articles z_offset | |
| Understanding the gcode Z offset ...currently a work in progress... articles z_offset Good Further Reading * Ellis's Print Tuning Guide on First Layer "Squish" Related wholly to non-tangential squish General concepts of squish and non-tangential shape (wip) Generally speaking an otherwise uninfluenced extrusion from the nozzle will have a circular cross section. If an extruded line is placed next to another extruded line which each have a circular cross section they only tangentially… | |
| Why does the Z Offset Drift, Vary or is Lost? faq z_offset Answer: Should it be saved? The value for the gcode z offset that fine adjusts layer height to properly shape the filament cross section is not saved in printer.cfg. The Elegoo ancillary screen has workflows that attempt to save it to a file yet this is not a standard Klipper practice and using other printer controls results in indeterministic results. | |
| Why should I set the Z Offset to adjust nozzle height? faq z_offset Answer: It shapes (squishes) the extrusion so that it bonds better to the surface beneath and adjacent perimeters and infill. This improves adhesion and the strength of the print. It also is critical for getting a good first layer. | |
| Why shouldn't the z offset be saved? faq z_offset Wouldn't it make sense to have the printer save the z offset? It gets “lost” between RESTARTs and power cycling. Answer: For various different reasons the value isn't a consistent single value worth saving: | |
| Z Offset z_offset about To be clear, this is a discussion about the gcode z offset, an adjustment to nozzle height from the plate. (It should not be conflated with the probe z offset.) The gcode z offset is set with the SET_GCODE_OFFSET klipper command and you should read its documentation, at | |
| Z Probe Calibration wip z_offset setup ...work in progress... See <https://www.klipper3d.org/Probe_Calibrate.html> for details on probe calibration. Note: calibrating the z probe is NOT the same as setting the gcode z offset. Also Note: the “z offset” set as part of probe calibration is not the “gcode z offset |
Z Offset Articles
Tom's Hardware
How to Correctly Set a 3D Printer's Z-Offset
https://www.tomshardware.com/how-to/correctly-set-3d-printer-z-offset
A fair article that includes more than the paper method and viable for most any printer.