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--- why_shouldn_t_the_z_offset_be_saved [2025/09/08 12:42] – ↷ Page moved from blog:2025-09-03:why_shouldn_t_the_z_offset_be_saved to why_shouldn_t_the_z_offset_be_saved sysmgr
+++ why_shouldn_t_the_z_offset_be_saved [2026/07/23 14:29] (current) – dshoop
@@ Line 1: / Line 1: @@
 ====== Why shouldn't the z offset be saved? ======
-{{tag> faq}}
+{{tag> faq, z_offset}}
 Wouldn't it make sense to have the printer save the z offset? It gets "lost" between RESTARTs and power cycling.
@@ Line 8: / Line 8: @@
 For various different reasons the value isn't a consistent single value worth saving:
-* varies by filament
+  * varies by filament
-* varies by initial layer height
+  * varies by initial layer height
-* if using with an uncalibrated probe and so including an error adjustment value this won't be a consistent value with saving
+  * if using with an uncalibrated probe and so including an error adjustment value this won't be a consistent value with saving because of the changing error adjustment.
+==== Furher discussion ====
+The gcode z offset is never saved under Klipper nor does that make sense. It’s supposed used for fine adjustment of filament squish to assure non-tangential bonding of extrusions to adjacent layers and walls.
+If your gcode z offset is negative then you’re mid-using it to include an error adjustment for not having your z probe calibrated. This then leads to an inappropriate workflow that makes you think you should be saving it in order to keep accounting for the error adjustment from being uncalibrated .
+What you want is to calibrate your z probe so you don’t need to keep the error adjustment value overloading the gcode z offset from it not being calibrated.
+You can read how to calibrate your z probe on the klipper docs stored on your printer or online at https://www.klipper3d.org/Probe_Calibrate.html
+Be aware that in later Elegoo software updates they broke this and other key klipper features purposefully, so you’ll need to manually edit the probe offset value to printer.cfg.