Macros for loading and unloading filament with Klipper

macros_filament.cfg

[gcode_macro LOAD_FILAMENT]
gcode:
    {% set speed = params.SPEED|default(300) %}
    {% set max_velocity = printer.configfile.settings['extruder'].max_extrude_only_velocity %}
    SAVE_GCODE_STATE NAME=load_state
    M300 # beep
    G91
    G92 E0
    G1 E350 F{max_velocity} # fast-load
    G1 E25 F{speed} # purge
    M300
    M300
    RESTORE_GCODE_STATE NAME=load_state

[gcode_macro UNLOAD_FILAMENT]
gcode:
    {% set speed = params.SPEED|default(300) %}
    {% set max_velocity = printer.configfile.settings['extruder'].max_extrude_only_velocity %}
    SAVE_GCODE_STATE NAME=unload_state
    G91
    M300 # beep
    G92 E0
    G1 E25 F{speed} # purge
    G1 E-420 F{max_velocity} # fast-unload
    M300
    M300
    RESTORE_GCODE_STATE NAME=unload_state

And where is the nozzle heating? Can't you load or unload the nozzle when it's cold...

And where is the nozzle heating? Can't you load or unload the nozzle when it's cold...

Pre-heat the nozzle...