Cura Script to Automatically Probe Only Printed Area

[zapta]

I cleaned up the python script. It now has command line flags that allow customization (set them in the slicer post processing command line).

https://github.com/zapta/misc/blob/master/duet3d_automesh/duet3d_automesh.py

I am very happy with the per-print quick partial meshing, getting good first layer without worrying about leveling. Ideally the slicers would provide the first layer's bounding box as place holders we can embed in gcode.

[tcj]

@zapta could you please change the script that it can handle negative coordinates in --meshable ?
This will make it usable for Delta printers, because
"For Cartesian printers, specify minimum and maximum X and Y values to probe and the probing interval. For Delta printers, specify the probing radius. If you define both, the probing area will be the intersection of the rectangular area and the circle. "
https://duet3d.dozuki.com/Wiki/Gcode#Section_M557_Set_Z_probe_point_or_define_probing_grid

Thank you

[zapta]

@tcj, I made the change. Can you give it another try?

https://github.com/zapta/misc/tree/master/duet3d_automesh

[tcj]

@zapta thank you for the effort, but ist does not work yet
only defining the default meshable area within the script (line 50) by

default="-185:185,-185:185"

works,
but when adding

<path to your python3> <path_to_the_duet3d_automesh.py file> --meshable "-185:185,-185:185"

to the Post-processing script, it fails

[zapta]

@tcj, try this syntax for the flags (notice the '=')

--meshable=-30:250,-3:280

[tcj]

@zapta

Thank you

[DK90]

@zapta said in Cura Script to Automatically Probe Only Printed Area:

--meshable=-30:250,-3:280

Hello, i have the following error when i am trying to ad the postprocess
can some one help me please?

Thanks

Post-processing script C:\Users\Dominic\AppData\Local\Programs\Python\Python36-32\python.exe C:\Program Files\Prusa3D\PrusaSlicer\duet3d_automesh.py file on file D:\2_Projekte\3D Druck\2_Modelle\28_R2D2_Did3D\R2D2_Did3D_SW_FullPack_h\STL_Final\zumdruckenbereit\Cube_PLA_Center foot_0.2mm_PET_2h24m.gcode failed.
Error code: 2
```~~~~

[tcj]

@DK90 the space in "Program Files" leads to this error
change it to

C:\Users\Dominic\AppData\Local\Programs\Python\Python36-32\python.exe "C:\Program Files\Prusa3D\PrusaSlicer\duet3d_automesh.py"

notice the "

[DK90]

@tcj said in Cura Script to Automatically Probe Only Printed Area:

C:\Users\Dominic\AppData\Local\Programs\Python\Python36-32\python.exe "C:\Program Files\Prusa3D\PrusaSlicer\duet3d_automesh.py"

Oh thank you now ot works
but wehn i start the print, there is now mesh leveling ....
where is my error?

Start G-Code

M83  ; extruder relative mode
M140 S[first_layer_bed_temperature] ; set bed temp

M190 S[first_layer_bed_temperature] ; wait for bed temp



; For automesh
     M557 TBD  ; parameters will be set automatically
     G28  ;home
     ;G29 S1 P"heightmap.csv"; Hoehenkarte Laden

M109 S[first_layer_temperature] ; wait for extruder temp
;G29 S1 P"heightmap.csv"; Hoehenkarte Laden


; Reinigungs Fahrt
G1 X-3.0 Y-10 F1500.0 ; go outside print area
G92 E0.0
G1 Z0
G1 E8 ; Purge Bubble
G1 X60.0 E9.0  F1000.0 ; intro line
G1 X100.0 E12.5  F1000.0 ; intro line
G92 E0.0

G-Code layer change setting

; Automesh: begin layer [layer_num]

[tcj]

@DK90 said in Cura Script to Automatically Probe Only Printed Area:

but wehn i start the print, there is now mesh leveling ....

and it never will without G29

this is a part of my start sequence

M140 S[first_layer_bed_temperature]
M104 S[first_layer_temperature]
M116; wait for temperatures to be reached
 
; For automesh
M557 TBD  ; parameters will be set automatically
G28 ; home
G29 ; mesh

[DK90]

oh yes that sounds good....that was my mistake...:D Thank you

[zapta]

@DK90, if you use panel due and prusaslicer (and maybe cura, didn't try), try to enable Support Remaining Time in the Printer Settings | General, tab. This will include M73 time markers in the gcode that which cause the post processing script to show remaining hours and minutes in the Standby fields of Panel Duet (ignore the '-' prefix).

This time estimation is much more consistent than the ones provided by Duet.

[DK90]

@zapta Thank you for the info. I will try it. That sound good.

[tcj]

@zapta I'm sorry to say that, but it does not work properly yet.
The script gives

M557 X-10:32 Y-10:32 P3:3

where it should deliver

M557 X-32:32 Y-32:32 P3:3

for a testcube in the middle of the bed with some mm of skirt

total dimensions +/- 21.xx mm

[OwenD]

@tcj what are your probe offsets?

[CCS86]

Probe offsets wouldn't matter.

Posting the gcode would be helpful though.

[zapta]

@tcj, try to run the script manually and see what it prints. To do that, run it from command line with the same arguments you have in the slicer and also add the name of the gcode file at the end of the command line.

When I run it I get prints like this

MESHABLE area: 30.0:280.0,30.0:280.0
Opening gcode file: /var/folders/dt/1t1sf6d574d3l023pknh_754000cbj/T/.PrusaSlicer.upload.7e0e-12b6-1a76-0282
Read 83648 lines
Parsing state = ParsingState.WAITING_FOR_LAYER1
;Automesh: begin layer 0
Parsing state = ParsingState.IN_LAYER1
;Automesh: begin layer 1
Parsing state = ParsingState.LAYER1_DONE
First layer print areas: 92:189,131:210
printArea: 92:189,131:210
Will use 4 x 3 mesh points
Marker: M557 TBD  ; marker for automesh script
Inserted: M557 X82:199 Y121:220 P4:3

(if you prefer, post your gcode file and command line parameters and I can test it here)

[tcj]

C:\Users\tcj-a>C:\Users\tcj-a\AppData\Local\Programs\Python\Python38-32\python.exe C:\Users\tcj-a\Documents\scripts\duet3d_automesh.py C:\Users\tcj-a\Desktop\single_wall_box.gcode --meshable=-185:185,-185:185
MESHABLE area: -185.0:185.0,-185.0:185.0
Opening gcode file: C:\Users\tcj-a\Desktop\single_wall_box.gcode
Read 7472 lines
Parsing state = ParsingState.WAITING_FOR_LAYER1
; Automesh: begin layer 0
Parsing state = ParsingState.IN_LAYER1
; Automesh: begin layer 1
Parsing state = ParsingState.LAYER1_DONE
First layer print areas: 0:22,12:22
printArea: 0:22,12:22
Will use 3 x 3 mesh points
Marker: M557 TBD  ; parameters will be set automatically
Inserted: M557 X-10:32 Y2:32 P3:3

single_wall_box.gcode

obviously the script does not handle negative numbers as needed, because the first layer print area is -22:-22, 22:22

[zapta]

@tcj, thanks for the example and for your patient.

I made a fix and am now getting the output below. The problem existed in the original code posted in this thread, parsing only non negative x and y values.

MESHABLE area: -100.0:100.0,-100.0:100.0
Opening gcode file: single_wall_box.gcode
Read 7472 lines
Parsing state = ParsingState.WAITING_FOR_LAYER1
; Automesh: begin layer 0
Parsing state = ParsingState.IN_LAYER1
; Automesh: begin layer 1
Parsing state = ParsingState.LAYER1_DONE
First layer print areas: -22:22,-22:22
printArea: -22:22,-22:22
Will use 3 x 3 mesh points
Marker: M557 TBD  ; parameters will be set automatically
Inserted: M557 X-32:32 Y-32:32 P3:3

https://github.com/zapta/misc/blob/master/duet3d_automesh/duet3d_automesh.iml

[tcj]

@zapta thank you