…currently a work in progress…

• Ellis's Print Tuning Guide on First Layer "Squish"

(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 connect. It will also only tangentially connect with the plate resulting in very poor adherence. A more rectangular cross section is desirable for maximal surface area connection. By adjusting the layer height very slightly we can control this shape and it will become more “stadium” shapped, (=, flat on the top and bottom and rounded on the sides.

If we don't have good surface area connection in the extrusion lines the print will also be very weak and fall part on the layers.

• Material
• type
• brand
• color
• Build plates

• Examples (click to enlarge)
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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=0.3

Fluidd provides easy to use controls and displays the current value, live.

Workflows using the Screen can be problematic as proper attention needs to be considered for how this value may be being changed by other controls. It is not displayed live and the value shown can be stale. This can result in issues when it send incremental value changes. Saving it in the Screen's workflows can also trigger changes to other values unintentionally. It's better and easier to change the value in the console or in the Fluidd GUI.

You can set the gcode z offset as part of the printer configuration.

Follow the procedure described in How should I set the z offset.

No.

At best the paper method will asymptotically approach the thickness of the paper being used. Yet this is an arbitrary value nearly in the ball park of what a typical z offset might be. The z offset we're seeking is filament dependent and will vary by the filament being used. We're seeking a correct affect on the shape of the extrusion's cross section, a “smush”, and that can't be defined by some arbitrary height.

(…work in progress…)

The Elegoo Centauri Carbon has sensors to “set the z offset”, yet it's realistically setting the probe offset. Prints will oftern stil require a z offset adjustment which can be set in the slicer.

(…work in progress…)

(…work in progress…)