====== Why shouldn't the z offset be saved? ======
{{tag> faq}}

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: 

  * varies by filament 

  * 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 because of the changing error adjustment.