Table of Contents

Print Start Workflows

{tag> articles setup}

One way (slicer machine start print gcode), or another (PRINT_START macro), there's certain steps we need to take to start printing the gcode that's slice from an object. There's reasons and rationale for why you'd place certain actions where.

Minimal workflow

More Realistic Workflow

Example Orca Machine Start gcode

;
; Orca Slicer Machine Start G-code by @dshoop v2.1
;

; PRINT_START 
; note the above line is commented out as we may or may not need to call this depending
; on our version of Klipper. If earlier versions of Elegoo's distribution it 
; was called automatically. 

G28; Home, if this fails no point to continue
M190 S[bed_temperature_initial_layer_single] ;wait for bed to reach temperature
M104 S150 ;pre-warm extruder to 150C below typical extrusion temps so as not to ooze, no wait
;
BED_MESH_CALIBRATE mesh_min={adaptive_bed_mesh_min[0]},{adaptive_bed_mesh_min[1]} mesh_max={adaptive_bed_mesh_max[0]},{adaptive_bed_mesh_max[1]} ALGORITHM=[bed_mesh_algo] PROBE_COUNT={bed_mesh_probe_count[0]},{bed_mesh_probe_count[1]} ADAPTIVE=1 ADAPTIVE_MARGIN=0
;
M104 S[nozzle_temperature_initial_layer] ;Heat extruder to temp, no wait
M220 S100 ;Set the feed speed to 100%
M221 S100 ;Set the flow rate to 100%
G90
G28 ;home
G1 Z10 F300
G1 X67.5 Y0 F6000
G1 Z0 F300
M109 S[nozzle_temperature_initial_layer] ; wait for extruder to reach temp
G92 E0 ;Reset Extruder
G1 X67.5 Y0 Z0.4 F300 ;Move to start position
G1 X167.5 E30 F400 ;Draw the first line
G0 Y0.6 F120
G1 X67.5 E60 F400 ;Draw the second line
G0 Z0.6 F120
G92 E0 ;Reset Extruder

Example PRINT_START macro

[gcode_macro PRINT_START]         
gcode:
	RESPOND PREFIX="" MSG=">> PRINT START <<"
	M117 Starting Klipper START_PRINT code
	M400	; wait for current moves to finish
	CLEAR_PAUSE
  	M105 ;Request a temperature report to be sent to the host as soon as possible
	RESPOND PREFIX="" MSG=">> GCODE START <<"
  	M117 Executing gcode