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Under extrusion at layer heights lower than 0.2 mm

Posted: Tue Aug 06, 2019 8:37 am
by _Seifer_
Hello everyone !

My Pro 2 Plus cannot print at 0.15 mm or lower layer heights, it is underextruding, sometimes clicking and jamming completely...
This does not happen at 0.2 mm or higher layer heights ! (well sometimes it is clogging but it is not systematic like it is at 0.1 mm)

The problem appears with multiple slicers (Ideamaker, PrusaSlicer) and filaments (PLA from different brand).

What's even weirder is that, even when I print in 0.1 mm layer height, the first layer is printed at 0.2 mm layer height but is also underextruded :?

Any idea what could be the cause, please ?

Re: Under extrusion at layer heights lower than 0.2 mm

Posted: Tue Aug 06, 2019 11:03 pm
by Vicky@Raise3D
Any picture can show the printing result at higher layer heights and lower layer heights?

Re: Under extrusion at layer heights lower than 0.2 mm

Posted: Thu Aug 08, 2019 8:59 am
by _Seifer_
20190807_165054.jpg
0.1 mm layer height, under extrusion then stopped extruding

20190807_165533.jpg
0.25 mm layer height


Here are pictures of two similar pieces (same thickness normally), the first one is printed at 0.1 mm, you can see the under extruded last printed layers and that it is not finished (only a few layers were printed before the extrusion stopped).

Re: Under extrusion at layer heights lower than 0.2 mm

Posted: Fri Aug 09, 2019 1:15 am
by Vicky@Raise3D
Is there any chance that you can share the gcode files sliced by 0.25mm and 01mm with us? From the pictures, the result does look weird.

Re: Under extrusion at layer heights lower than 0.2 mm

Posted: Fri Aug 09, 2019 8:30 am
by _Seifer_
G-code for a simple coin, 0.2 vs 0.1 mm layer height, sliced with PrusaSlicer and Ideamaker
First layer height is 0.2 mm in both cases.

Coin.STL
STL file
(12.19 KiB) Downloaded 83 times
IM_Coin 0.1 mm.gcode
Ideamaker 0.1 mm
(145.73 KiB) Downloaded 80 times
IM_Coin 0.2 mm.gcode
Ideamaker 0.2 mm
(83.12 KiB) Downloaded 85 times
PS_Coin 0.1 mm.gcode
PrusaSlicer 0.1 mm
(152.79 KiB) Downloaded 82 times

Re: Under extrusion at layer heights lower than 0.2 mm

Posted: Fri Aug 09, 2019 8:35 am
by _Seifer_
IM_Coin 0.1 mm.data
(28.24 KiB) Downloaded 85 times
IM_Coin 0.2 mm.data
(28.22 KiB) Downloaded 83 times

Re: Under extrusion at layer heights lower than 0.2 mm

Posted: Fri Aug 09, 2019 10:35 am
by _Seifer_
Just tried to print this ball bearing at 0.1 mm layer height
https://www.thingiverse.com/thing:143467

You can clearly see in this picture that there is under extrusion, right from the start of the print :
20190809_113024.jpg

Re: Under extrusion at layer heights lower than 0.2 mm

Posted: Mon Aug 12, 2019 10:06 pm
by _Seifer_
Any ideas, please?

Re: Under extrusion at layer heights lower than 0.2 mm

Posted: Tue Aug 13, 2019 3:42 am
by Vicky@Raise3D
We have compared your profile with the default High Quality - 0.1mm layer height one. Some of your settings are a lot faster than default settings, some are even more than double.
Would you like to restore the setting in default profile and run a test print?

Re: Under extrusion at layer heights lower than 0.2 mm

Posted: Mon Oct 14, 2019 12:44 am
by goldendezign
I'm having a similar problem with PLA material, can someone weigh in on this problem. My issue is slightly different, in the fact that I'm using the default template for PLA 1.75mm and It starts to either under extrude or drag the nozzle on the 2nd and 3rd layers of the actual part but not on the raft

Re: Under extrusion at layer heights lower than 0.2 mm

Posted: Wed Oct 23, 2019 12:00 am
by Vicky@Raise3D
Would you like to share you .gcode and .data files with us?