ATTENTION SV08 USERS! DROP YOUR MAX ACCEL TO 20K IN THE PRINTER CONFIG!
KAMP IS APPLIED IN THIS MACRO. YOU MUST INSTALL KAMP TO ENABLE SMART PARKING AND LINE PURGE.
There are multiple #STATUS_ macros built into the start print sequence. These have all been commented out to prevent unknown errors. If you have LEDs setup in your printer, look here and uncomment the ones desired.
This start_print macro will pass data from your slicer to your printer and perform all necessary pre-flight commands for a successful print on your printer running Klipper. This means heat-soak, QGL/Z-tilt, bed mesh and a purge line before each print.
Important
You need to replace your "Start G-code" in your slicer to be able to send data from slicer to this macro. Click on the slicer you use below and read the instructions.
SuperSlicer
In Superslicer go to "Printer settings" -> "Custom g-code" -> "Start G-code" and replace it with:M104 S0 ; Stops OrcaSlicer from sending temp waits separately
M140 S0
START_PRINT EXTRUDER=[first_layer_temperature] BED=[first_layer_bed_temperature] CHAMBER=[chamber_temperature] MATERIAL=[filament_type]
OrcaSlicer
In OrcaSlicer go to "Printer settings" -> "Machine start g-code" and replace it with:M104 S0 ; Stops OrcaSlicer from sending temp waits separately
M140 S0
START_PRINT EXTRUDER=[first_layer_temperature] BED=[first_layer_bed_temperature] CHAMBER=[chamber_temperature] MATERIAL=[filament_type]
PrusaSlicer
In PrusaSlicer go to "Printer settings" -> "Custom g-code" -> "Start G-code" and replace it with:
M104 S0 ; Stops PrusaSlicer from sending temp waits separately
M140 S0
start_print EXTRUDER=[first_layer_temperature[initial_extruder]] BED=[first_layer_bed_temperature] CHAMBER=[chamber_temperature] MATERIAL=[filament_vendor]
Cura
In Cura go to "Settings" -> "Printer" -> "Manage printers" -> "Machine settings" -> "Start G-code" and replace it with:
start_print EXTRUDER={material_print_temperature_layer_0} BED={material_bed_temperature_layer_0} CHAMBER={build_volume_temperature} MATERIAL={material_type}
Important
The start_print macro has predefined names for nevermore and chamber thermistor. If you do not have neither chamber thermistor, or nevermore, no changes are needed. If you are adding a nevermore and/or a chamber thermistor, make sure that yours are named correctly. In your printer.cfg file verify the following:
Chamber thermistor
Make sure chamber thermistor is named "chamber" and update XXX.[temperature_sensor chamber]
sensor_type: XXX
sensor_pin: XXX
Nevermore
Make sure your fan(s) are named "nevermore" and update pin value XXX to your desired pin.[output_pin nevermore]
pin: XXX
value: 0
shutdown_value: 0
Remember to setup your End Print Macro if you haven't already!
Important
If you do not have an end print macro in place, your toolhead will sit at the last part of your print, causing the print to deform where the nozzle is.
Auto Install Script
cd ~
curl -sSL https://raw.githubusercontent.com/ss1gohan13/A-better-print_start-macro-SV08/main/direct_install.sh | bash
Manual installation: Copy the macro and replace it with your old print_start/start_print macro in your printer configuration (e.g. printer.cfg, macros.cfg, ect). Then read through and remove any commented parts of this macro that may be needed.
EXPAND THIS TO SEE THE START PRINT MACRO
#####################################################################
#------------------- A better start_print macro --------------------#
#####################################################################
[gcode_macro START_PRINT]
gcode:
# This part fetches data from your slicer, such as bed temp, extruder temp, chamber temp, and the size of your printer.
{% set target_bed = params.BED|int %}
{% set target_extruder = params.EXTRUDER|int %}
{% set target_chamber = params.CHAMBER|default("40")|int %}
{% set x_wait = printer.toolhead.axis_maximum.x|float / 2 %}
{% set y_wait = printer.toolhead.axis_maximum.y|float / 2 %}
# Homes the printer, sets absolute positioning, and updates the Stealthburner LEDs.
#STATUS_HOMING
# Check homing status and home if needed
{% if "xyz" not in printer.toolhead.homed_axes %}
G28 # Full home if not already homed
{% elif 'z' not in printer.toolhead.homed_axes %}
G28 Z # Home Z if only Z is unhomed
{% endif %}
G90 # Use absolute/relative coordinates
M400 # Wait for current moves to finish
CLEAR_PAUSE # Clear any existing pause state
# Uncomment for bed mesh (1 of 2)
BED_MESH_CLEAR # Clears old saved bed mesh (if any)
# Checks if the bed temp is higher than 90C - if so, then trigger a heat soak.
{% if params.BED|int > 90 %}
M117 Bed: {target_bed}C # Display bed temperature
#STATUS_HEATING # Sets SB-LEDs to heating-mode
M106 S255 # Turns on the PT-fan
# Conditional check for nevermore pin
{% if printer["output_pin nevermore"] is defined %}
SET_PIN PIN=nevermore VALUE=1 # Turns on the Nevermore
{% endif %}
G1 X{x_wait} Y{y_wait} Z15 F9000 # Go to the center of the bed
M190 S{target_bed} # Sets the target temp for the bed
# Start chamber heating progress monitoring (modify just this section)
M117 Monitoring chamber: {target_chamber}C # Display chamber monitoring status
# Conditional check for chamber thermistor
{% if printer["temperature_sensor chamber"] is defined %}
TEMPERATURE_WAIT SENSOR="temperature_sensor chamber" MINIMUM={target_chamber} # Waits for the chamber to reach the desired temp
{% else %}
M117 Soak: 15min (No chamber thermistor)
G4 P900000 # Wait 15 minutes for heatsoak
{% endif %}
# If the bed temp is not over 90c, then handle soak based on material
{% else %}
M117 Bed: {target_bed}C # Display bed temperature
#STATUS_HEATING # Sets SB-leds to heating-mode
G1 X{x_wait} Y{y_wait} Z15 F9000 # Go to center of the bed
M190 S{target_bed} # Sets the target temp for the bed
# Material-based soak times with variant handling
{% set raw_material = params.MATERIAL|default("PLA")|string|upper %}
# Extract base material type by handling variants
{% set material = namespace(type="") %}
{% if "PLA" in raw_material %}
{% set material.type = "PLA" %}
{% elif "PETG" in raw_material %}
{% set material.type = "PETG" %}
{% elif "TPU" in raw_material or "TPE" in raw_material %}
{% set material.type = "TPU" %}
{% elif "PVA" in raw_material %}
{% set material.type = "PVA" %}
{% elif "HIPS" in raw_material %}
{% set material.type = "HIPS" %}
{% else %}
{% set material.type = raw_material %}
{% endif %}
# Define soak times
{% set soak_time = {
"PLA": 180000, # 3 minutes - Standard PLA soak time
"PETG": 240000, # 4 minutes - PETG needs slightly longer to stabilize
"TPU": 180000, # 3 minutes - TPU/TPE materials
"PVA": 180000, # 3 minutes - Support material, similar to PLA
"HIPS": 240000 # 4 minutes - When used as support/primary under 90C
}[material.type]|default(300000) %} # Default to 5 minutes if material not found
M117 Soak: {soak_time/60000|int}min ({raw_material}) # Display soak time and material
G4 P{soak_time} # Execute soak timer
{% endif %}
# Check if GANTRY_LEVELING macro exists, use it if available
{% if printer.configfile.config['gcode_macro GANTRY_LEVELING'] is defined %}
#STATUS_LEVELING # Sets SB-LEDs to leveling-mode
M117 Gantry Leveling... # Display gantry leveling status
GANTRY_LEVELING # Performs the appropriate leveling method (QGL or Z_TILT)
{% else %}
# Fallback to traditional method if GANTRY_LEVELING doesn't exist
# Conditional method for Z_TILT_ADJUST and QUAD_GANTRY_LEVEL
{% if 'z_tilt' in printer %}
#STATUS_LEVELING # Sets SB-LEDs to leveling-mode
M117 Z-tilt... # Display Z-tilt adjustment
Z_TILT_ADJUST # Levels the buildplate via z_tilt_adjust
{% elif 'quad_gantry_level' in printer %}
#STATUS_LEVELING # Sets SB-LEDs to leveling-mode
M117 QGL... # Display QGL status
QUAD_GANTRY_LEVEL # Levels the gantry
{% endif %}
{% endif %}
# Conditional check to ensure Z is homed after leveling procedures
{% if 'z' not in printer.toolhead.homed_axes %}
#STATUS_HOMING # Sets SB-LEDs to homing-mode
M117 Z homing # Display Z homing status
G28 Z # Home Z if needed after leveling
{% endif %}
# Heating the nozzle to 150C. This helps with getting a correct Z-home
#STATUS_HEATING # Sets SB-LEDs to heating-mode
M117 Hotend: 150C # Display hotend temperature
M109 S150 # Heats the nozzle to 150C
M117 Cleaning the nozzle...
#STATUS_CLEANING # Sets SB-LEDs to cleaning-mode
CLEAN_NOZZLE #EXTRUDER={target_extruder} # Clean nozzle before printing
# M117 Nozzle cooling 150C... # Display wait message
#STATUS_COOLING # Sets SB-LEDs to cooling-mode
# M109 S150 # Heats the nozzle to 150C
# M117 Hang tight... # Display wait message
# G4 P60000 # Wait 1 min to stablize and cooldown the nozzle
#STATUS_CALIBRATING_Z # Sets SB-LEDs to z-calibration-mode
#M117 Tappy Tap... # Display tappy tap message
#PROBE_EDDY_NG_TAP # See: https://hackmd.io/yEF4CEntSHiFTj230CdD0Q
SMART_PARK # Parks the toolhead near the beginning of the print
# Uncomment for bed mesh (2 of 2)
#STATUS_MESHING # Sets SB-LEDs to bed mesh-mode
M117 Bed mesh # Display bed mesh status
BED_MESH_CALIBRATE ADAPTIVE=1 #Method=rapid_scan # Starts bed mesh Uncomment Method=rapid_scan for eddy rapid bed meshing
M400 # Wait for current moves to finish
SMART_PARK # KAMP smart park
# Heats up the nozzle to target via data from the slicer
M117 Hotend: {target_extruder}C # Display target hotend temperature
#STATUS_HEATING # Sets SB-LEDs to heating-mode
M107 # Turns off part cooling fan
M109 S{target_extruder} # Heats the nozzle to printing temp
# Gets ready to print by doing a purge line and updating the SB-LEDs
M117 The purge... # Display purge status
#STATUS_CLEANING # Sets SB-LEDs to cleaning-mode
LINE_PURGE # KAMP line purge
M117 Printer goes brrr # Display print starting
#STATUS_PRINTING # Sets SB-LEDs to printing-mode
02-19-2025: Corrected formatting, spelling, order of operations, and change log
02-18-2025: Initial installation script created
01-11-2025: Initial creation
02-01-2025: WTFBBQAUCE I forgot to put all of the changes down. It's been a lot of formatting, additions, ect.
02-13-2025: Combined the start print macro to no longer require individual macros. (Got a nevermore? Awesome! Don't? Thats ok for heating purposes)
Hungry for more macromania? Make sure to check out these awesome links.
- A Better End Print Macro
- More replacement SV08 Macros
- Mjonuschat optimized bed leveling macros
- Ellis Useful Macros
- Voron Klipper Macros
- KAMP
- Klipper Shake&Tune plugin
A big thank you to the Klipper communuity for helping make this macro.
If you have feedback please open an issue on github.