Adaptive mesh probing script for PrusaSlicer & SuperSlicer

imonsei

Hihi.
I made this little snippet to have your printer only probe the bed in the areas where you have your prints.
I have only tested it on SuperSlicer, but the command fully complies with PrusaSlicer documentation.
You insert this script in your "printer settings" section, in the "start g-code" box.
It should go after you have heated the bed, and after G28, and G32.
This replaces your normal G29 command.

;--- Start adaptive mesh probing
M557 X{first_layer_print_min[1]}:{first_layer_print_max[1]} Y{first_layer_print_min[2]}:{first_layer_print_max[2]} S20  ;define probe area with 20mm between each probe spot
G29 S0 ;start probe, save and activate height map
;--- Stop adaptive mesh probing

I made this for my V-core3.1.
Here is my full start g-code, in case you need it, or have suggestions for improvements.

M115 U3.1.0 ;tell printer latest fw version
M83  ; extruder relative mode

; Heat bed before probing so heat expansion of bed is mostly accounted for
M140 S[first_layer_bed_temperature] ; set bed temp
M190 S[first_layer_bed_temperature] ; wait for bed temp

G28                         ; home all
G32                         ; make sure build plate is level. 3 point probe.

;G29 S1                      ;load mesh (disabled because of adaptive mesh probing)
;--- Start adaptive mesh probing
M557 X{first_layer_print_min[1]}:{first_layer_print_max[1]} Y{first_layer_print_min[2]}:{first_layer_print_max[2]} S20  ;define probe area with 20mm between each probe spot
G29 S0 ;start probe, save and activate height map
;--- Stop adaptive mesh probing

; Heating nozzle after probe so we avoid oozing
M104 S[first_layer_temperature] ; set extruder temp
M109 S[first_layer_temperature] ; wait for extruder temp

;---start adaptive 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} E6 F360.0 ; extrude some filament in the y direction
G92 E0.0 ; reset extruder
G1 X{first_layer_print_min[0]-30} Y{first_layer_print_min[1]+15} E6 F360.0 ; extrude some filament in both the x and y direction
G92 E0.0 ; reset extruder
G1 X{first_layer_print_min[0]-10} Y{first_layer_print_min[1]} E6 F360.0 ; extrude some filament returning back to the start
G92 E0.0 ; reset extruder
;---end adaptive purge line

T3P3Tony

@imonsei thanks for posting this. I will have to give it a go on my toolchanger.