Flow color scheme unusable on some projects - up to 785 mm3/s

Bambu Lab Software Bambu Studio
1

Image is representative for the issue. Filament is PLA, with 21 mm3/s max flow rate.

image
image1240×626 67.1 KB

2

Any chance you can find any of the super high flow areas? If so please attach a photo and if you could please find the corresponding part in the gcode viewer that would be helpful, maybe I can spot in the code where the calculation is wrong.

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3

Maybe its imperial :clown_face::grinning: lol

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4

Thanks for the pointers, I’ll take a look to see what’s going on. I should not have such a high flow at any point. Regardless, I will take a look at the gcode, that should tell us.

5

Again, much appreciated pointers.

I found the code piece in the nozzle load line. I modified the line to have more space for printing. It works flawlessly on one printer, however the profile I was using for this project/printer was not the proper one. If I’m looking into it correctly, the issue is somewhere at line

G0 Y1.5 E2

as it keeps the feed rate calculated previously. I might be wrong, but entering an F100 on that line brings everything back to normal.

Here’s the bugged code

;===== nozzle load line ===============================
M975 S1
G90
M83
T1000
G1 X18.0 Y1.0 Z0.8 F18000;Move to start position
M109 S{nozzle_temperature_initial_layer[initial_extruder]}
G1 Z0.2
G0 E2 F300
G0 X254 E30 F{outer_wall_volumetric_speed / (0.3 * 0.5) / 2 * 60}
;G0 Y15 E2 F{outer_wall_volumetric_speed / (0.3 * 0.5) / 4 * 60}
;G0 X239.5
;G0 E0.2
G0 Y0.5 E2
G0 X18 E30 F{outer_wall_volumetric_speed / (0.3 * 0.5) / 2 * 60}
M400

Here’s good code

;===== nozzle load line ===============================
M975 S1
G90
M83
T1000
G1 X18.0 Y0 Z0.8 F18000;Move to start position
M109 S{nozzle_temperature_initial_layer[initial_extruder]}
G1 Z0.2
G0 E2 F150
G0 X254 E30 F{outer_wall_volumetric_speed/(0.3*0.5)/2 * 60}
G0 Y15 E2 F{outer_wall_volumetric_speed/(0.3*0.5)/ 4 * 60}
G0 X253.5
G0 E0.2
G0 Y0.5 E2
G0 X18 E30 F{outer_wall_volumetric_speed/(0.3*0.5)/2 * 60}
M400
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