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Anycubic Kobra 2 wipe functionality
(sopuli.xyz)
I'm using an Anycubic Kobra 2 printer, it has a nice rubber pad at the back of the plate, which i assume is for wiping the nozze? However the printer profile Anycubic provides for prusa slicer doesn't use it at all, and actually has a fair amount of oozing because it heats the extruder first (which it then doesn't wipe away). So i decided i would add it myself. I'm completely new 3D printing, having only had the printer for a little over a week, so my solution may be a bit rough around the edges.
################ Start G-code with nozzle wipe and purge in back-left corner ################
G90 ; use absolute coordinates
M83 ; set extruder to relative mode
M140 S[first_layer_bed_temperature] ; set bed temp
G28 ; home all axes
G1 Z2 ; raise nozzle to 2mm
G92 E0 ; reset extruder position
G1 X80 Y240 F1500 ; position nozzle right next to wipe pad
M104 S[first_layer_temperature] ; set extruder temp
M190 S[first_layer_bed_temperature] ; wait for bed temp
M109 S[first_layer_temperature] ; wait for extruder temp
G1 Z0 ; lower nozzle before wiping
G1 X90 F500 ; wipe nozzle across pad in X direction
G1 Y235 F500 ; wipe nozze in Y direction
G1 Z3 ; lift nozzle to 3mm
G1 X5 Y225 F3000 ; move nozze to back-left corner of bed for purging
G1 Z0.28 ; lower nozzle to 0.28mm
G1 X45 E25 F500 ; extrude 25mm of filament in a 40mm line
G92 E0 ; reset extruder position
G1 E-3 F3000 ; quickly retract filament 3mm
G1 X90 F4000 ; quickly move away from purge
The printer also end with the bed pulled all the way to the back, which I disliked since i would prefer it presented at the front for easy removal.
################ End G-code which presents the print for easy removal by pushing the bed fully forward ################
M104 S0 ; Extruder off
M140 S0 ; Heatbed off
G92 E0 ; reset extruder position
G1 E-5 F3000 ; quickly retract filament 5mm
G91 ; use relative positioning
G1 Z1 ; lift nozzle 1mm
G28 X0 Y0 ; home X and Y axis
G1 X0 Y240 F3000 ; move nozzle to the side and bed fully forward
M107 ; Fan off
M84 ; disable stepper motors
Most races are not against time though... They're against other competitors. The time it takes you is pretty irrelevant, as long as the others are slower.
It's more or less only time trials that are races against time.