diff --git a/ercf_additional.cfg b/ercf_additional.cfg index 713f888..392fb2c 100644 --- a/ercf_additional.cfg +++ b/ercf_additional.cfg @@ -8,18 +8,18 @@ variable_retract_length: 35 # The location of the pin, this should be the position of the toolhead when the cutter # just lightly touches the pin -variable_pin_loc_x: 20 -variable_pin_loc_y: 21.0 +variable_pin_loc_x: 21 +variable_pin_loc_y: 19 # The starting and end positions when making the cut # In particular, instead of making the cut by traveling to the pin location above, # we leave a small safety margin along X-axis to avoid scratching on the pin when traveling # This should also give a small distance to produce some momentum when pressing on the pin -variable_pin_park_x_dist: 5 +variable_pin_park_x_dist: 5.0 # Position of the toolhead when the cutter is fully compressed # Should leave a small headroom to avoid banging the toolhead or gantry -variable_pin_loc_x_compressed: 5 +variable_pin_loc_x_compressed: 5.0 # Speed related settings # Note that if the cut speed is too fast, the steppers can lose steps @@ -39,9 +39,12 @@ variable_cut_fast_move_fraction: 0.5 ; fraction of the move that uses fast move variable_safe_margin_x: 30 variable_safe_margin_y: 30 -# Number of repeats for the cut -# Better be one to avoid small debris due to different cutting positions for different tries -variable_num_cut_repeats: 1 +# Whether or not to make a second cut +# The goal of the second cut is to avoid filament adding friction to the blade causing the lever unable to decompress +# If set to a positive value, we first retract this amount, make the second cut, then extrude back +# Set to 0 to disable to second cut +# You should only enable this if you cannot get the lever to reliabily decompress. +variable_second_cut_retract_length: 0 # Whether to eject the filament at the end variable_final_eject: 0 @@ -61,7 +64,6 @@ variable_retracted_length_: 0 ; a state variable to keep track of how much we ha gcode: {% set RETRACT_LENGTH = params.RETRACT_LENGTH | default(printer['gcode_macro CUT_FILAMENT']['retract_length']) | float %} {% set FINAL_EJECT = params.FINAL_EJECT | default(printer['gcode_macro CUT_FILAMENT']['final_eject'], True) | int %} - {% set NUM_CUT_REPEATS = params.NUM_CUT_REPEATS | default(printer['gcode_macro CUT_FILAMENT']['num_cut_repeats']) | int%} {% set current_loc_x = printer.gcode_move.gcode_position.x %} {% set current_loc_y = printer.gcode_move.gcode_position.y %} @@ -88,13 +90,14 @@ gcode: G90 ; absolute positioning _MOVE_TO_CUTTER_PIN PIN_PARK_X_LOC={pin_park_x_loc} PIN_PARK_Y_LOC={pin_park_y_loc} - {% set fast_slow_transition_loc = (pin_loc_x_compressed - pin_park_x_loc) * cut_fast_move_fraction + pin_park_x_loc | float %} - {% for _ in range(NUM_CUT_REPEATS) %} - G1 X{fast_slow_transition_loc} F{cut_fast_move_spd} ; make a fast move to initiate contact of the blade with the filament - G1 X{pin_loc_x_compressed} F{cut_slow_move_spd} ; do the cut in slow move - G4 P{cut_dwell_time} - G1 X{pin_park_x_loc} F{evacuate_speed} ; evacuate - {% endfor %} + # Make the main cut + _DO_CUT_MOTION PIN_PARK_X_LOC={pin_park_x_loc} + # Optional secondary cut to help decompressing the lever + {% if second_cut_retract_length > 0 %} + G1 E-{second_cut_retract_length} F3000 + _DO_CUT_MOTION PIN_PARK_X_LOC={pin_park_x_loc} + G1 E{second_cut_retract_length} F3000 + {% endif %} {% if FINAL_EJECT == 1 %} G1 E-80 F3000 @@ -130,13 +133,29 @@ gcode: G1 X{pin_park_x_loc} Y{pin_park_y_loc} F{travel_spd} {% endif %} +[gcode_macro _DO_CUT_MOTION] +description: helper to do a single horizontal cut movement +gcode: + {% set pin_loc_x_compressed = printer['gcode_macro CUT_FILAMENT']['pin_loc_x_compressed'] | float %} + {% set cut_fast_move_fraction = printer['gcode_macro CUT_FILAMENT']['cut_fast_move_fraction'] | float %} + {% set cut_fast_move_spd = printer['gcode_macro CUT_FILAMENT']['cut_fast_move_spd'] | float %} + {% set cut_slow_move_spd = printer['gcode_macro CUT_FILAMENT']['cut_slow_move_spd'] | float %} + {% set cut_dwell_time = printer['gcode_macro CUT_FILAMENT']['cut_dwell_time'] | float %} + {% set evacuate_speed = printer['gcode_macro CUT_FILAMENT']['evacuate_speed'] | float %} + {% set pin_park_x_loc = params.PIN_PARK_X_LOC | float %} + {% set fast_slow_transition_loc = (pin_loc_x_compressed - pin_park_x_loc) * cut_fast_move_fraction + pin_park_x_loc | float %} + G1 X{fast_slow_transition_loc} F{cut_fast_move_spd} ; make a fast move to initiate contact of the blade with the filament + G1 X{pin_loc_x_compressed} F{cut_slow_move_spd} ; do the cut in slow move + G4 P{cut_dwell_time} + G1 X{pin_park_x_loc} F{evacuate_speed} ; evacuate + [gcode_macro restore_cutted_filament] description: extrudes an amount equal (or proportional) to the retraction during the last cut gcode: SAVE_GCODE_STATE NAME=restore_cutted_filament_state {% set RETRACTED_LENGTH = printer['gcode_macro CUT_FILAMENT']['retracted_length_'] | float %} M83 ; relative extrusion - G1 E{RETRACT_LENGTH} F3000 + G1 E{RETRACTED_LENGTH} F3000 SET_GCODE_VARIABLE macro=CUT_FILAMENT variable=retracted_length_ value=0 ; clear the retracted amount RESTORE_GCODE_STATE NAME=restore_cutted_filament_state @@ -144,4 +163,3 @@ gcode: [gcode_macro _ERCF_FORM_TIP_STANDALONE] gcode: CUT_FILAMENT {rawparams} -