Optimized startup GCode for Bambu Lab P series. Keeps all the original startup actions but changes the order in which they happen, and proceed with the startup instead of waiting for the bed to heat up. It's usually almost always ready to print by the time it's finished, unless you're printing with a bed temp above 60C it might pause before proceeding.
This changes the purge line to be similiar to the KAMP purge line.
Not tested on units with AMS.
Use at your own risk!
| ;______Machine: Bambu Labs P1 Series______ | |
| ;______Date: FEB/2025______ | |
| ;______FW Version: 01.07.00.00______ | |
| ;______Modified by: https://github.com/coltography | |
| ;This modified Startup g-code optimizes the process a little to cut the print start time in half (or more!) | |
| ;Doesn't sacrifice any quality settings or remove any safeties, but use at your own risk regardless. | |
| ;Comments are messy and still a work in progress. | |
| ; _____PREHEAT NOZZLE, BED, TURN ON NOZZLE FAN, MOTHERBOARD FAN_____ | |
| M104 S140 ; Preheat nozzle to bed leveling temperature; turns on nozzle fan | |
| M140 S[bed_temperature_initial_layer_single] ; Set bed temperature | |
| M710 A1 S255 ; Turn on motherboard fan (P1S) | |
| ;_____RESET MACHINE STATUS______ | |
| M290 X40 Y40 Z2.6666666 | |
| G91 | |
| M17 Z0.4 ; Lowers z-axis motor current to prevent damage if it collides with print head | |
| G380 S2 Z30 F800 ; G380 is same as G38; lower the hotbed , to prevent the nozzle is below the hotbed | |
| G380 S2 Z-25 F800 ; default F300 | |
| G1 Z5 F800 ; default F300 | |
| G90 ; absolute positioning mode | |
| M17 X1.2 Y1.2 Z0.75 ; Reset motor current to default | |
| G90 ; absolute positioning mode | |
| M220 S100 ; Reset Feed rate | |
| M221 S100 ; Reset Flow rate | |
| M73.2 R1.0 ; Reset print time remaining | |
| M1002 set_gcode_claim_speed_level : 5 | |
| M221 X0 Y0 Z0 ; turn off soft endstop to prevent protential logic problem | |
| G29.1 Z{+0.0} ; clear z-trim value first | |
| M204 S10000 ; init ACC set to 10m/s^2 | |
| ; _______TURN ON FANS TO PREVENT PLA JAMMING IF NOZZLE GETS HOT FROM PRINT BED______ | |
| ; ________ ONLY ACTIVATES IF BED TEMP IS ABOVE 45C WHEN PRINT STARTS AND FILAMENT IS PLA ________ | |
| {if filament_type[initial_extruder]=="PLA"} | |
| {if (bed_temperature[initial_extruder] >45)||(bed_temperature_initial_layer[initial_extruder] >45)} | |
| M106 P3 S180 | |
| {endif} ; Prevent PLA from jamming | |
| {endif} | |
| M106 P2 S100 ; turn on auxillary part cooling fan to cool down nozzle quicker | |
| ; ______PREPARE PRINT TEMPERATURE AND AMS_______ | |
| G91 ; Sets relative positioning mode | |
| G0 Z10 F1200 ; Moves print bed 10mm | |
| G90 ; Sets back to absolute positioning mode | |
| G28 X ; Homes the print head to X axis only | |
| M975 S1 ; Turns on vibration compensation (?) Whatever that does | |
| G1 X60 F12000 | |
| G1 Y245 ; Moves print head to Y245 (Back near garbage) | |
| G1 Y265 F3000 ; Moves print head to Y265 slower (back near garbage) | |
| M620 M ; Enables AMS(?) | |
| M620 S[initial_extruder]A ; switch material if AMS exist | |
| M109 S[nozzle_temperature_initial_layer] | |
| G1 X120 F12000 | |
| G1 X20 Y50 F12000 | |
| G1 Y-3 | |
| T[initial_extruder] | |
| G1 X54 F12000 | |
| G1 Y265 | |
| M400 | |
| M621 S[initial_extruder]A | |
| M620.1 E F{filament_max_volumetric_speed[initial_extruder]/2.4053*60} T{nozzle_temperature_range_high[initial_extruder]} | |
| M412 S1 ; Enables filament run-out detection | |
| ; ______PREPARE NOZZLE TO WIPE ON BED_______ | |
| M975 S1 ; Turns on vibration compensation (?) Whatever that does | |
| G0 X135 Y253 F20000 ; Move to exposed steel surface edge / bed wiping area | |
| ; BED WOBBLES BEFORE NEXT STEP | |
| G28 Z P0 T300; Home Z axis with low precision, allowing 300C temperature | |
| G29.2 S0 ; Disable bed leveling compensation | |
| G0 Z5 F20000 ; Moves Z axis 5mm quickly | |
| ; _____HARD WIPE NOZZLE ON AND TURN ON FAN______ | |
| G1 X60 Y265 | |
| G92 E0 | |
| ; G1 E-0.5 F300 ; retrack more ; DEFAULT THIS IS ON | |
| G1 X100 F5000; second wipe mouth | |
| G1 X70 F15000 | |
| G1 X100 F5000 | |
| G1 X70 F15000 | |
| G1 X100 F5000 | |
| G1 X70 F15000 | |
| G1 X100 F5000 | |
| G1 X70 F15000 | |
| G1 X90 F5000 ; Wipes 4 times | |
| G0 X128 Y261 Z-1.5 F20000 ; Move to exposed steel surface and stop the nozzle | |
| M104 S140 ; set temp down to heatbed acceptable | |
| M106 S255 ; turn on fan (G28 has turn off fan) | |
| ; _____WIPE NOZZLE ON BED TO PREPARE FOR BED LEVELING______ | |
| M221 S; push soft endstop status | |
| M221 Z0 ;turn off Z axis endstop | |
| G0 Z0.5 F20000 | |
| G0 X125 Y259.5 Z-1.01 ; bed hops down/up | |
| G0 X131 F211 | |
| G0 X124 | |
| G0 Z0.5 F20000 | |
| G0 X125 Y262.5 | |
| G0 Z-1.01 ; bed hops down/up | |
| G0 X131 F211 | |
| G0 X124 | |
| G0 Z0.5 F20000 | |
| G0 X125 Y260.0 | |
| G0 Z-1.01 ; bed hops down/up | |
| ;G0 X131 F211 | |
| ;G0 X124 | |
| ;G0 Z0.5 F20000 | |
| ;G0 X125 Y262.0 | |
| ;G0 Z-1.01 ; bed hops down/up | |
| ;G0 X131 F211 | |
| ;G0 X124 | |
| ;G0 Z0.5 F20000 | |
| ;G0 X125 Y260.5 | |
| ;G0 Z-1.01 ; bed hops down/up | |
| ;G0 X131 F211 | |
| ;G0 X124 | |
| ;G0 Z0.5 F20000 | |
| ;G0 X125 Y261.5 | |
| ;G0 Z-1.01 ; bed hops down/up | |
| ;G0 X131 F211 | |
| ;G0 X124 | |
| ;G0 Z0.5 F20000 | |
| ;G0 X125 Y261.0 | |
| ;G0 Z-1.01 ; bed hops down/up ; disabled some hops because 7 is unnecessary ; will keep testing | |
| G0 X131 F211 | |
| G0 X124 | |
| G0 X128 | |
| G2 I0.5 J0 F300 | |
| G2 I0.5 J0 F300 | |
| G2 I0.5 J0 F300 | |
| G2 I0.5 J0 F300 ; 1st circular motion wipe | |
| ; | |
| G2 I0.5 J0 F3000 | |
| G2 I0.5 J0 F3000 | |
| G2 I0.5 J0 F3000 | |
| G2 I0.5 J0 F3000 ; Completes quick 2nd circular motion wipe for final nozzle on flat surface (preparing for precise bed leveling) | |
| ;_____BED LEVEL AND HOME Z AXIS_____ | |
| M221 R; pop softend status ; disables end stop? ; Resets extrusion settings? reset progress bar on LCD? | |
| ; Any extruder temperatures are reset here to complete homing of z-axis without filament ooze, can't be overridden | |
| G1 Z10 F1200 | |
| M400 | |
| G1 Z10 | |
| G1 F30000 ; Sets feedrate to 30000 mm/min | |
| G1 X230 Y15 ; Moves print head to front right of glass cover | |
| G29.2 S1 ; Enable Bed Leveling Compensation | |
| ; G28 ; home again after hard wipe mouth ; DISABLED BY DEFAULT | |
| M106 S0 ; Turns off chamber fan | |
| ; ______ bed leveling start ; optional toggle which appears before starting print(?) ___________ | |
| M1002 judge_flag g29_before_print_flag | |
| M622 J1 | |
| M1002 gcode_claim_action : 1 | |
| G29 A X{first_layer_print_min[0]} Y{first_layer_print_min[1]} I{first_layer_print_size[0]} J{first_layer_print_size[1]} | |
| M400 | |
| M500 ; save cali data | |
| M623 ; Sets extrusion multiplier (?) | |
| ; ______ bed leveling end________ | |
| ; _______HOME ALL AXIS________ | |
| M1002 judge_flag g29_before_print_flag | |
| M622 J0 | |
| M1002 gcode_claim_action : 13 | |
| G28 ; Homes all axis | |
| M623 ; Sets extrusion multiplier (?) | |
| M975 S1 ; Turns on vibration compensation (?) Whatever that does | |
| ;_________TURN ON FANS TO PREVENT PLA JAMMING FROM HEAT CREEP__________ | |
| ; Same as command at start of gcode, may be redundant? | |
| {if filament_type[initial_extruder]=="PLA"} | |
| {if (bed_temperature[initial_extruder] >45)||(bed_temperature_initial_layer[initial_extruder] >45)} | |
| M106 P3 S180 | |
| {endif};Prevent PLA from jamming | |
| {endif} | |
| M106 P2 S100 ; turn on big fan, to cool down toolhead | |
| ; _____INPUT SHAPING VIBRATION CHECK, SET NOZZLE TEMPERATURE_________ | |
| M104 S{nozzle_temperature_initial_layer[initial_extruder]} ; Set nozzle temperature early as possible | |
| G1 X128 Y128 Z10 F20000 | |
| M400 P200 | |
| M970.3 Q1 A7 B30 C80 H15 K0 | |
| M974 Q1 S2 P0 | |
| G1 X128 Y128 Z10 F20000 | |
| M400 P200 | |
| M970.3 Q0 A7 B30 C90 Q0 H15 K0 | |
| M974 Q0 S2 P0 | |
| ; ______HOME PRINT HEAD X AXIS_______ | |
| M975 S1 ; Turns on vibration compensation (?) Whatever that does | |
| G1 F30000 | |
| G1 X230 Y15 ; Move print head towards home position | |
| G28 X ; Home X axis | |
| ; ______POSITION PRINT HEAD OVER GARBAGE______ | |
| M975 S1 ; Turns on vibration compensation (?) Whatever that does | |
| G1 X65 Y230 F18000 ; Moves print head outward | |
| G1 Y264 F6000 ; Moves print head back to garbage | |
| ; G1 X100 F18000 ; Wipes nozzle again | |
| ; G1 X65 F18000 ; | |
| ; ______INITIAL NOZZLE PURGE AND WIPE_________ | |
| M109 S[nozzle_temperature_initial_layer] ; Wait for nozzle to reach printing temp | |
| G92 E0 ; Reset Extruder | |
| M106 P1 S0 ; Turn off part cooling fan | |
| G1 E20 F200 ; Extrude some filament | |
| M400 | |
| M106 P1 S255 ; Turns on part cooling fan to 100 percent | |
| M400 S2 ; Waits for filament to cool a little before shake | |
| ; ______SHAKE AND WIPE_________ | |
| G1 X70 F9000 | |
| G1 X76 F15000 | |
| G1 X65 F15000 | |
| G1 X76 F15000 | |
| G1 X65 F15000 | |
| G1 X76 F15000 | |
| G1 X65 F15000 | |
| G1 X76 F15000 | |
| G1 X65 F15000 | |
| G1 X76 F15000 | |
| G1 X65 F15000 | |
| G1 X76 F15000 | |
| G1 X65 F15000 ; Shake print head to detach melted filament, tripled for extra shake | |
| G1 X80 F6000 | |
| G1 X95 F15000 | |
| G1 X80 F15000 | |
| G1 X165 F15000; Hard wipe end | |
| G1 X65 Y230 F18000 ; Moves print head outward | |
| G1 Y264 F6000 ; Moves print head back to garbage to wait for bed to reach temp | |
| ; ______WAIT FOR NOZZLE AND BED TEMP BEFORE PROCEEDING_______ | |
| M190 S[bed_temperature_initial_layer_single] ; Wait for bed to reach temperature if it hasn't reached it yet | |
| ; M109 R{nozzle_temperature_initial_layer[initial_extruder]-60} ; Wait until nozzle is at least 50 degrees below printing temp ; continues if above | |
| M104 S{nozzle_temperature_initial_layer[initial_extruder]} ; Set final extruder temperature so it continues to rise during purge | |
| G1 X165 F15000 ; final wipe | |
| ; ____SET Z-OFFSET FOR TEXTURED PEI PLATE_____ | |
| ;curr_bed_type={curr_bed_type} | |
| {if curr_bed_type=="Textured PEI Plate"} | |
| G29.1 Z{-0.04} ; for Textured PEI Plate | |
| {endif} | |
| ; _____TURN OFF FANS_____ | |
| M1002 gcode_claim_action : 0 | |
| M106 S0 ; turn off part fan | |
| M106 P2 S0 ; turn off aux fan | |
| M106 P3 S0 ; turn off chamber fan | |
| M975 S1 ; Turns on vibration compensation (?) Whatever that does | |
| ; ______ START PURGE LINE______ | |
| G92 E0.0; reset extruder | |
| G1 X{first_layer_print_min[0]-10} Y{first_layer_print_min[1]} Z0.8 F6000.0; position 10mm left from the lower left of the first layer | |
| G1 X{first_layer_print_min[0]-10} Y{first_layer_print_min[1]+30} E35 F360.0; extrude 35mm of filament in the Y direction | |
| G92 E0.0; reset extruder | |
| G1 E-0.5 F2100; small retraction | |
| G1 Y{first_layer_print_min[1]+40} f6000.0; move an aditional 10mm without extruding | |
| G92 E0.0; reset extruder |