START PRINT

gistfile1.txt

[gcode_macro START_PRINT]
gcode:
      #Get Printer built volume dimensions
      {% set X_MAX = printer.toolhead.axis_maximum.x|default(100)|float %}
      {% set Y_MAX = printer.toolhead.axis_maximum.y|default(100)|float %}
      {% set Z_MAX = printer.toolhead.axis_maximum.z|default(100)|float %}

      #Get Nozzle diameter and filament width for conditioning
      {% set NOZZLE = printer.extruder.nozzle_diameter|default(0.4)|float %}
      {% set FILADIA = printer.extruder.filament_diameter|default(1.75)|float %}

      #Set Start coordinates of priming lines
      {% set X_START = 10.0|default(10.0)|float %}
      {% set Y_START = 20.0|default(20.0)|float %}

      #Calculate Primer line extrusion volume and filament length
      {% set PRIMER_WIDTH = 0.75 * NOZZLE %}                    
      {% set PRIMER_HEIGHT = 0.70 * NOZZLE %}           
      {% set PRIMER_SECT = PRIMER_WIDTH * PRIMER_HEIGHT %}    
      {% set PRIMER_VOL = PRIMER_SECT * (X_MAX - 3 * X_START) %}    
      {% set FILA_SECT = 3.1415 * ( FILADIA / 2.0)**2 %}          
      {% set FILA_LENGTH = 1.55 * PRIMER_VOL / FILA_SECT %}      

      #Get Bed and Extruder temperature from Slicer GCode
      {% set BED_TEMP = params.BED_TEMP|default(60)|float %}
      {% set EXTRUDER_TEMP = params.EXTRUDER_TEMP|default(190)|float %}
      #Preheat nozzle and bed
      M104 S{EXTRUDER_TEMP} T0                        
      M140 S{BED_TEMP}                                

      #Home
      G28

      #Move up to clean bed
      G1 Y{Y_MAX - 20} Z{Z_MAX/4.0} F6000                

      #Heat nozzle and bed
      M190 S{BED_TEMP}                               
      M109 S{EXTRUDER_TEMP} T0                       

      #Precondition extruder
#      G92 E0     
#      G1 X{X_START} Y{Y_START} Z{PRIMER_HEIGHT} F6000.0     
#      G1 X{X_MAX - 2 * X_START} Y{Y_START} Z{PRIMER_HEIGHT} F2000.0 
#      G1 X{X_MAX - 2 * X_START} Y{Y_START + PRIMER_WIDTH} Z{PRIMER_HEIGHT} 
#      G1 X{X_START} Y{Y_START + PRIMER_WIDTH} Z{PRIMER_HEIGHT} F2000.0 
#      G92 E0            
#      G1 Z2.0 F600        
#      G1 Z0.2 F600        
#      G1 Z2.0 F600

    ; now print a line of filament to prepare extrusion
    G92 E0 ; reset extruder
    G1 X0.1 Y20 Z0.3 F5000.0 ; move to start-line position
    G1 X0.1 Y200.0 Z0.3 F1500.0 E15 ; draw 1st line
    G1 X0.4 Y200.0 Z0.3 F5000.0 ; move to side a little
    G1 X0.4 Y20 Z0.3 F1500.0 E30 ; draw 2nd line
    G92 E0 ; reset extruder
    G1 Z1.0 F3000 ; move z up little to prevent scratching of surface    G1 X100 Y100 F15000

#    ;Tuning params
#    ;Put printing message on LCD screen
#    M117 Printing...
#    M83
#    ; Start of actual GCode for the print