Layer and filament estimation not working

Barracuda72

Hi i Capture this Thread for a very similar problem.
Updated to the actual rc2 version…and change the starting code of S3D so i´m not sure when the prob exactly started.
I dont get a Layer time..for the DWC theres only one layer..a very long layer
I changed some lines in my starting code:

G21 ;metric values
G90 ;absolute positioning
M82
M107 ;start with the fan off
G28 ;move to endstops
G29 S1
G92 E0 ;zero the extruded length
G1 X-44 Y-75 Z0.2 E0.5 F7000 ; Drop to bed
M117 Preparing...;Put message on LCD screen
G1 X0 Y-90 E10 F500 ; Extrude 10mm of filament in a 4cm line
G1 X44 Y-75 E12 F500 ; Extrude 12mm of filament in a 4cm line
G92 E0 ; zero the extruded length
G1 E-0.4 F500 ; Retract a little
G1 X87 Y-17 Z1 F6000 ; Quickly wipe away from the filament line
G1 Z5 ; Raise and begin printing.
M117 Printing...;Put printing message on LCD screen

guess before that layer time in DWC was ok..but how could that gcode prevent DWC to show correct layer time?

dc42

Try 1.21RC3 tomorrow when I release it, and if the problem is still there, make the gcode file available to me.

Barracuda72

made a Scrrenshot..print is already 1:45:00 in progress and still on first layer https://imgur.com/a/q3tmb of the DWC

and this happens with all prints so far

Barracuda72

ok..updated to RC3 but the problem is the same…only one big layer in the timer..

dc42

I can't do anything about this without a sample GCode file from you.

Barracuda72

will upload it later…have to test if its slicer specific

Barracuda72

ok..made a calibration cube..
1. with Cura 15.04
https://drive.google.com/file/d/15f5AtY0VROXYdu-Rqe2Fgv7t0LyyHXp-/view?usp=sharing

2. with Simplify3D
https://drive.google.com/file/d/17FLBhOeISPs6M6-l8X4HPyd2fQa3IvDW/view?usp=sharing

most settings are similar except in the S3D file the printer do that little wipe line before the print. Even tried to erase the 2nd G92E0

With the Cura file the layer informations are ok..he count each layer.

With the S3D file its only 1 long layer in the DWC…first layer 1. sec ( thats the prime/wipe line in my starting code)..2nd layer...endless

DWC after the S3D print: "Layer: 2 of 83, Filament Usage: 1598.2mm of 1601.2mm (3.0mm remaining)"

strange

hmm I should start doing LEGO bricks instead of Calibration Cube..so they are at least useful

Barracuda72

Already had the spare time to look at the gCode files?

tbahre

Having layer and estimation problems myself. I posted thinking it was a problem with Cura but I'm not so sure:
https://www.duet3d.com/forum/thread.php?pid=40787#p40787
Also: https://www.duet3d.com/forum/thread.php?pid=40843#p40843

c310

i have similar issue.

you can see that on the picture it shows 96 layers. however file had 6 layers or so.
even looking at progress indicator of 50% and 2 layers printed it gives an idea that there is no 96 layers

https://1drv.ms/u/s!AhtLyZEPcjv9gc48ed0BtcWa-GX5xQ link to gcode file

dc42

Thanks, that's on my list to investigate before the 1.21 release.

dc42

@c310:

i have similar issue.

…

you can see that on the picture it shows 96 layers. however file had 6 layers or so.
even looking at progress indicator of 50% and 2 layers printed it gives an idea that there is no 96 layers

The reason it thinks you have 96 layers is that your print is only 0.8mm high but you have 15mm of Z hop configured. The large amount of Z hop is confusing the code that works out the total number of layers.

dc42

@Barracuda72:

ok..made a calibration cube..
1. with Cura 15.04
https://drive.google.com/file/d/15f5AtY0VROXYdu-Rqe2Fgv7t0LyyHXp-/view?usp=sharing

2. with Simplify3D
https://drive.google.com/file/d/17FLBhOeISPs6M6-l8X4HPyd2fQa3IvDW/view?usp=sharing

most settings are similar except in the S3D file the printer do that little wipe line before the print. Even tried to erase the 2nd G92E0

With the Cura file the layer informations are ok..he count each layer.

With the S3D file its only 1 long layer in the DWC…first layer 1. sec ( thats the prime/wipe line in my starting code)..2nd layer...endless

DWC after the S3D print: "Layer: 2 of 83, Filament Usage: 1598.2mm of 1601.2mm (3.0mm remaining)"

strange

hmm I should start doing LEGO bricks instead of Calibration Cube..so they are at least useful

The problem is this line:

G1 X-44 Y-75 Z0.2 E0.5 F7000 ; Drop to bed

The firmware treats it as a printing move because it contains both extrusion and XY movement. Z is very high at that point, which throws off the layer height computation. The workaround is to do the extrusion in a separate move.

The reason that it worked in 1.20 is that in 1.21 the layer height code was changed to allow for slicers that use variable layer height.