Random X Purge Line
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Estimated printing price per file
€0.33 – €0.40 net (excluding VAT)
For file: RanomXPurge.bgcode
This is an estimate for one file. You’ll confirm the exact price before ordering.
File and estimate settings
File used for this estimate
Average indicative estimate: €0.36 excluding VAT (range midpoint).
- Weight reported by the author
- 6 g
- Print time reported by the author
- 17.4 min
- Source material
- PLA
- Estimate material
- PLA
- Estimate printer
- Bambu Lab P1S - 0.4 nozzle
- Estimate process
- 0.20mm Standard
Indicative estimate for the selected file only, based on the author’s weight and print time. File variants are not added together. The final price is calculated after file analysis.
Saved on this device.
Creates a random X variable that is then used to place the start of the purge line
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Updated at source:
Model information
- Source
- Printables
- Category
- Prusa Parts & Upgrades
- License
- Creative Commons — Public Domain
I made this using settings for my MK4S. I don't know if it will work for anything else. YMMV.
Copy and Paste this code to your start G-Code in the Printers tab of PrusaSlicer. Make sure to copy and paste a backup of your original code into Notepad just in case.
{local rnd_x = random(20, 80)*0.1}
{local purge_x = random(0, (print_bed_max[0] - 51) 10) 0.1}
M17 ; enable steppers
M862.1 P[nozzle_diameter] A{(filament_abrasive[0] ? 1 : 0)} F{(nozzle_high_flow[0] ? 1 : 0)} ; nozzle check
M862.3 P "[printer_model]" ; printer model check
M862.5 P2 ; g-code level check
M862.6 P"Input shaper" ; FW feature check
M115 U6.1.3+7898
M555 X{(min(print_bed_max[0], first_layer_print_min[0] + 32) - 32)} Y{(max(0, first_layer_print_min[1]) - 4)} W{((min(print_bed_max[0], max(first_layer_print_min[0] + 32, first_layer_print_max[0])))) - ((min(print_bed_max[0], first_layer_print_min[0] + 32) - 32))} H{((first_layer_print_max[1])) - ((max(0, first_layer_print_min[1]) - 4))}
G90 ; use absolute coordinates
M83 ; extruder relative mode
M140 S[first_layer_bed_temperature] ; set bed temp
M104 T0 S{((filament_notes[0]=~/.*HT_MBL10.*/) ? (first_layer_temperature[0] - 10) : (filament_type[0] == "PC" or filament_type[0] == "PA") ? (first_layer_temperature[0] - 25) : (filament_type[0] == "FLEX") ? 210 : (filament_type[0]=~/.*PET.*/) ? 175 : 170)} ; set extruder temp for bed leveling
M109 T0 R{((filament_notes[0]=~/.*HT_MBL10.*/) ? (first_layer_temperature[0] - 10) : (filament_type[0] == "PC" or filament_type[0] == "PA") ? (first_layer_temperature[0] - 25) : (filament_type[0] == "FLEX") ? 210 : (filament_type[0]=~/.*PET.*/) ? 175 : 170)} ; wait for temp
M84 E ; turn off E motor
G28 ; home all without mesh bed level
G1 X{rnd_x} Y-4 Z5 F4800; (Original G1 X42 Y-4 Z5 F4800)
M302 S160 ; lower cold extrusion limit to 160C
{if filament_type[initial_tool]=="FLEX"}
G1 E-4 F2400 ; retraction
{else}
G1 E-2 F2400 ; retraction
{endif}
M84 E ; turn off E motor
G29 P9 X10 Y-4 W32 H4
{if first_layer_bed_temperature[initial_tool]<=60}M106 S100{endif}
G0 Z40 F10000
M190 S[first_layer_bed_temperature] ; wait for bed temp
M107
;
; MBL
;
M84 E ; turn off E motor
G29 P1 ; invalidate mbl & probe print area
G29 P1 X0 Y0 W50 H20 C ; probe near purge place
G29 P3.2 ; interpolate mbl probes
G29 P3.13 ; extrapolate mbl outside probe area
G29 A ; activate mbl
; prepare for purge
M104 S{first_layer_temperature[0]}
G0 X{purge_x} Y-4 Z15 F4800 ; move away and ready for the purge
M109 S{first_layer_temperature[0]}
G92 E0
M569 S0 E ; set spreadcycle mode for extruder
;
; Extrude purge line
;
G92 E0 ; reset extruder position
G1 E{(filament_type[0] == "FLEX" ? 4 : 2)} F2400 ; deretraction after the initial one before nozzle cleaning
G0 E7 X{purge_x + 15} Z0.2 F500 ; purge
G0 X{purge_x + 25} E4 F500 ; purge
G0 X{purge_x + 35} E4 F650 ; purge
G0 X{purge_x + 45} E4 F800 ; purge
G0 X{purge_x + 48} Z0.05 F8000 ; wipe, move close to the bed
G0 X{purge_x + 51} Z0.2 F8000 ; wipe, move quickly away from the bed
G92 E0
M221 S100 ; set flow to 100%