Some strange things with Superslicer and Duet.

TomasL

Slized a small thing 20x4mm approx (according to superslicer)
Sliced in Superslicer.

Now in the Web UI it reports 226 layers and oject height of 33,95 mm, as you can se in the screencap.
Now where does this information come from, because it must be wrong.
Is it the Duet that mis-interprets something or is it the slicer that does something

oliof

this is either because it's sliced with variable layer heights, or because there is a Z move to move the print head off the print. Z moves that have a comment starting with capital E will be ignored for object height.

Phaedrux

Can also happen when supports are used that are not synced to the layer height.

TomasL

@phaedrux No supports, just two whels for the bed adustment, 20mm in dia and 4 mm high.
It was finished after som 26 layers or so.

Phaedrux

Can you share the gcode file?

TomasL

@phaedrux Yes
JusterRatt_0.15mm_PLA_MK2.5_1h25m.gcode
And the STL
JusterRatt.stl

Why cant I upload it as a ZIP-file?

oliof

@tomasl look here, line 40342, filament specific end gcode

G1 Z33.95 ; Move print head up

So that's where that comes from. And peeking at the HEIGHT comments, 33.95/0.15 = 226

So that's that.

TomasL

@oliof
I found this row in the "Printer Setting Custom G-codes"

M107 ; turn off fan
{if max_layer_z < max_print_height}G1 Z{z_offset+min(max_layer_z+30, max_print_height)}{endif} ; Move print head up
G1 X0 Y200 F3000 ; home X axis

Should it be commented out?

droftarts

@tomasl said in Some strange things with Superslicer and Duet.:

{if max_layer_z < max_print_height}G1 Z{z_offset+min(max_layer_z+30, max_print_height)}{endif} ; Move print head up

Just add an "E" at the beginning of the comment, then the line will be ignored, eg:

{if max_layer_z < max_print_height}G1 Z{z_offset+min(max_layer_z+30, max_print_height)}{endif} ;E Move print head up

Ian

Phaedrux

@tomasl said in Some strange things with Superslicer and Duet.:

Why cant I upload it as a ZIP-file?

The forum software doesn't allow it. Possibly because you never know what's actually inside a zip file.

RogerPodacter

i noticed on my new RatRig printer, any STL i slice with SuperSlicer, the Duet Web Interface always says 1 of 900 layers printing. the 900 never changes, no matter which Gcode i load to the Duet 3 Mini 5+. Its weird but i just assumed it was a bug in the slicer.

Phaedrux

@rogerpodacter said in Some strange things with Superslicer and Duet.:

i noticed on my new RatRig printer, any STL i slice with SuperSlicer, the Duet Web Interface always says 1 of 900 layers printing. the 900 never changes, no matter which Gcode i load to the Duet 3 Mini 5+. Its weird but i just assumed it was a bug in the slicer.

Can you share an example gcode file?

RogerPodacter

@phaedrux I should have clarified, this is on the mobile web version when i connect with my iPhone 11 Pro. Attached gcode and screenshot. Duet Web.jpg y_max_endstop_slider_3.1 Extended Direct Mount_0.2mm_PLA_6m.gcode

Phaedrux

@rogerpodacter I think it's the same issue as above. Z moves in the end gcode that don't have ;E in the comment so they are getting picked up as normal print Z moves.

G1 Z10 F600 ; Move print head up
G1 X5 Y240 F15000 ; present print
G1 Z78 F600 ; Move print head further up
G1 Z180 F600 ; Move print head further up

Add ;E to the comments on those Z moves in the slicer end gcode and those Z moves will be ignored by DWC.

RogerPodacter

@phaedrux thanks, i revised my custom end gcode which is where those lines were coming from and seems to fix the issue.

{if max_layer_z < max_print_height}G1 Z{z_offset+min(max_layer_z+2, max_print_height)} F600 ;END Move print head up{endif}
G1 X5 Y{print_bed_max[1]*0.8} F{travel_speed*60} ;END present print
{if max_layer_z < max_print_height-10}G1 Z{z_offset+min(max_layer_z+70, max_print_height-10)} F600 ;END Move print head further up{endif}
{if max_layer_z < max_print_height*0.6}G1 Z{max_print_height*0.6} F600 ;END Move print head further up{endif}
M140 S0 ; turn off heatbed
M104 S0 ; turn off temperature
;M107 ; turn off fan
M84 X Y E ; disable motors