Differences

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--- understanding_the_gcode_z_offset [2025/09/17 23:10] – dshoop
+++ understanding_the_gcode_z_offset [2025/09/20 16:48] (current) – dshoop
@@ Line 7: / Line 7: @@
   * Ellis's Print Tuning Guide on [[https://ellis3dp.com/Print-Tuning-Guide/articles/first_layer_squish.html|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 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.
 === Squish will be different for different layer heights ===
 === Squish will be different for different filaments ===
   *  Material
   *  type
@@ Line 62: / Line 70: @@
 {{ :orca_slicer_filament_z-offset_setting.jpg?400 }}
-==== Calibrating the gcode z offset ====
+===== Setting and calibrating the gcode z offset =====
 Follow the procedure described in [[how_should_i_set_the_z_offset_to_adjust_nozzle_height|How should I set the z offset]].
@@ Line 71: / Line 79: @@
 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.
+The same logic applies to using [[why_not_feeler_gauges|feeler gauges]].
+===== Related Topics =====
 === Is the CC setting the z offset or setting the probe z offset? ===