Q1 Pro Filament cutter

Video:

To assemble, you will need:

Spring 0.5X9X15 - 4 pcs
Knife 36x6x6- 1 pcs
Screw M2.5х25 - 2 pcs
Screw M3x6 - 2pcs
Screw DIN965 M2x6 - 1pcs
Brass threaded insert M3x5x5 - 6 pcs
Brass threaded insert M3x4x4.2 - 2 pcs
Brass threaded insert M2x3x3.2 - 1 pcs

Assemble:

Blade:

• Trim the blade using one of the templates.
• Press the brass threaded insert M2x3x3.2 into place.
• Insert the trimmed blade into the blade holder.
• Secure the blade with a DIN965 M2x6 screw.

Feeder:

• Install the brass threaded inserts M3x5x5 around the perimeter, following the same pattern as the original feeder.
• Install the brass threaded inserts M3x4x4.2 into the hotend mounting points, following the same pattern as the original feeder.
• Connect the two 0.5x9x15 springs together.
• Insert the spring and the blade into their designated places.
• Compress the spring and blade using the lever and secure them with an M2.5x25 screw.

Pusher:

• Install the brass threaded inserts M3x5x5 into the outer hole.
• Connect the two 0.5x9x15 springs together.
• Insert the spring, push rod, and bushing into the push rod housing.
• Screw the M2.5x25 screw into the bottom of the push rod housing.
• Secure the assembly to the printer frame using two M3x6 screws.

Macros:

Macros for editing are in gcode_macro.cfg

Modified macro for automatic unloading of the filament from the touch screen

[gcode_macro M603]
description: unload filament
gcode:
    M118 Heat up complete
    G92 E0
    #############FILAMENT_CUT##############
        FILAMENT_CUT unload=1
    #######################################
    # G0  E15 F400
    # G4  P1000
    # G92 E0
    # G1  E-90 F800
    M400
    M118 Filament unloaded

Modified pause macro for automatic cutting of the filament when changing the color from the slicer

[gcode_macro PAUSE]
rename_existing: BASE_PAUSE
gcode:
    {% set z = params.Z|default(35)|int %}                                                   ; z hop amount
    {% set cut_filament = params.CUT_FILAMENT|default(0)|int %} # 0 = false, 1 = true
{% if printer['pause_resume'].is_paused|int == 0 %}    
    SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE={z}                              ; set z hop variable for reference in resume macro
    SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=etemp VALUE={printer['extruder'].target}    ; set hotend temp variable for reference in resume macro

    DISABLE_FILAMENT_WIDTH_SENSOR
    SET_FILAMENT_SENSOR SENSOR=fila ENABLE=0                                             ; disable filament sensor      
    SAVE_GCODE_STATE NAME=PAUSE                                                          ; save current print position for resume                
    BASE_PAUSE                                                                           ; pause print
    G92 E0
    G1 E-5 F1800
    {% if (printer.gcode_move.position.z ) < z %}
        G91                                                                              ; relative positioning
        G1 Z{z} F900                                                                     ; raise Z up by z hop amount
    {% else %}
        G91                                                                              ; relative positioning
        G1 Z{5} F900
        SET_GCODE_VARIABLE MACRO=RESUME VARIABLE=zhop VALUE=0
    {% endif %}
    #############FILAMENT_CUT##############
    {% if cut_filament %}
        FILAMENT_CUT unload=1 need_homing=0
    {% endif %}
    #######################################
    SAVE_GCODE_STATE NAME=PAUSEPARK2
    G90                                                                                  ; absolute positioning
    G1 X97 F9000
    G1 Y253 F9000                                     ; park toolhead at front center
    SAVE_GCODE_STATE NAME=PAUSEPARK                                                      ; save parked position in case toolhead is moved during the pause (otherwise the return zhop can error)
    M104 S0                                                                              ; turn off hotend
    SET_IDLE_TIMEOUT TIMEOUT=86400                                                       ; set timeout to 24 hours
    SET_STEPPER_ENABLE STEPPER=extruder enable=0
{% endif %}</code></pre><p>Filament Change G-code</p><pre><code class="language-plaintext">;ROD_CHANGE

PAUSE cut_filament=1

Macro for automatic filament cutting

[gcode_macro FILAMENT_CUT]
gcode:
    {% set cut_speed = params.CUT_SPEED|default(1000)|float %}
    {% set speed = params.SPEED|default(7800)|float %}
    {% set cut_temp = params.CUT_TEMP|default(180)|float %}
    {% set unload = params.UNLOAD|default(0)|int %}  # 0 = false, 1 = true
    {% set need_homing = params.NEED_HOMING|default(1)|int %}  # 0 = false, 1 = true

{% set initial_temp = printer.extruder.temperature %}

{% if printer.extruder.temperature < cut_temp %}
    M104 S{cut_temp}
{% endif %}


{% if need_homing %}
    G28 X Y
{% else %}
    {% if "x" not in printer.toolhead.homed_axes %}
        G28 X
    {% endif %}
    {% if "y" not in printer.toolhead.homed_axes %}
        G28 Y
    {% endif %}
{% endif %}
G90

{% if printer.extruder.temperature < cut_temp %}
    TEMPERATURE_WAIT SENSOR=extruder MINIMUM={cut_temp}
{% endif %}

G1 X20 Y205 F{speed}
G1 X20 Y245 F{speed}
M83
G1 X-5 Y245 E-0.8 F{cut_speed}
G1 X20 Y245 E1.0 F{cut_speed}

{% if unload %}
    G1 X20 Y180 E-22.5 F{speed}
{% else %}
    G1 X20 Y205 E-2.5 F{speed}
    G1 X20 Y180 F{speed}
{% endif %}


{% if initial_temp < cut_temp %}
    M104 S0
{% endif %}</code></pre>