Is there an easy way to invert the direction of the extruder in the code
Physically, you can just flip the stepper motor’s connection.
https://github.com/ErikZalm/Marlin/blob/Marlin_v1/Marlin/Configuration.h#L359
#define INVERT_E0_DIR true/false
Or just switch the coils wiring to the stepper drivers.
Thats interesting because I’ve change that setting @Andrew_Hodel thinking it would invert it with no result. I just dont want to switch the wires if I dont have to
Yup most steppers are on 2 poles with B- (possible common) B A (possible common) A-
You can just switch the polarity.