Glasofruix
Posts: 4
Joined: Sat Nov 10, 2018 6:23 am

Re: V 4.1 Retraction at layer change and outline crossing

Sat Nov 10, 2018 6:25 am

Yep, same problem here. Looks like "Only retract when crossing open spaces" is active but selectively on layer change....

ward@eldersoft.ca
Posts: 1
Joined: Sun Sep 07, 2014 12:39 pm

Re: V 4.1 Retraction at layer change and outline crossing

Sat Nov 10, 2018 4:34 pm

I am seeing the exact same problem.

jmunkki
Posts: 24
Joined: Fri Jan 29, 2016 3:35 am

Re: V 4.1 Retraction at layer change and outline crossing

Mon Nov 12, 2018 11:15 am

Here's some sliced gcode samples. I'm still making sure that this is the issue by printing a similar model using 4.01 (and if that works, maybe re-printing the rather subpar print I got from 4.1). I'll post a factory file later today once I'm done testing.

The problem seems to be that 4.1 is behaving wonky when it shouldn't be crossing open spaces. It's going straight and not doing a proper retraction. Here's what 4.1 produces when crossing to the other side of the build plate on a roughly semi-circular model:

Code: Select all

G92 E0.0000
G1 E-0.5000 F2400
G1 X5.240 Y196.867 F3000
G1 X5.240 Y196.387
; feature inner perimeter
G1 Z4.600 F1200
G1 X9.760 Y196.518 F4800
G1 X220.240 Y202.133
G1 X220.240 Y202.599
G1 X220.720 Y202.613
G1 Z4.400 F1200
G1 E4.0000 F2400
G92 E0.0000
It's retrating only -0.5 (why?) and then restarting with an E4. At this point the nozzle is still full, so my extruder motor skips a step, but there's way too much nozzle pressure buildup, so the resulting stringing is horrible.

Below is the exact same move when sliced with 4.0.1. For some reason it looks like it's retracting twice (-3.616mm and -4.5mm), then moving around the circle the long way and restarting 4.4mm. I'm not sure this is exactly right either, but the profile has been producing very good results with 4.0.1 and now I'm getting horrible stringing and extruder skipping with 4.1.

Code: Select all

G92 E0
G1 X5.240 Y196.867 E-3.6160 F3000
G1 X5.240 Y195.762 E-4.5000
G1 Z4.600 F1200
; inner perimeter
G1 X9.765 Y195.906 F4800
G1 X9.765 Y192.827 F4800
G1 X6.765 Y192.827 F4800
G1 X6.765 Y144.497 F4800
G1 X6.941 Y138.321 F4800
G1 X7.470 Y132.162 F4800
G1 X8.350 Y126.043 F4800
G1 X9.577 Y119.985 F4800
G1 X11.149 Y114.007 F4800
G1 X13.059 Y108.127 F4800
G1 X15.302 Y102.367 F4800
G1 X17.870 Y96.744 F4800
G1 X20.755 Y91.277 F4800
G1 X23.947 Y85.984 F4800
G1 X27.436 Y80.881 F4800
G1 X31.211 Y75.986 F4800
G1 X35.259 Y71.314 F4800
G1 X39.567 Y66.881 F4800
G1 X44.121 Y62.701 F4800
G1 X48.906 Y58.788 F4800
G1 X53.907 Y55.155 F4800
G1 X59.108 Y51.813 F4800
G1 X64.490 Y48.773 F4800
G1 X70.037 Y46.046 F4800
G1 X75.731 Y43.639 F4800
G1 X81.553 Y41.562 F4800
G1 X87.485 Y39.821 F4800
G1 X93.506 Y38.420 F4800
G1 X99.596 Y37.366 F4800
G1 X105.738 Y36.662 F4800
G1 X111.909 Y36.309 F4800
G1 X118.091 Y36.309 F4800
G1 X124.262 Y36.662 F4800
G1 X130.403 Y37.366 F4800
G1 X136.494 Y38.420 F4800
G1 X142.515 Y39.821 F4800
G1 X148.447 Y41.562 F4800
G1 X154.269 Y43.639 F4800
G1 X159.963 Y46.046 F4800
G1 X165.510 Y48.773 F4800
G1 X170.892 Y51.813 F4800
G1 X176.093 Y55.155 F4800
G1 X181.094 Y58.788 F4800
G1 X185.879 Y62.701 F4800
G1 X190.433 Y66.881 F4800
G1 X194.741 Y71.314 F4800
G1 X198.789 Y75.986 F4800
G1 X202.564 Y80.881 F4800
G1 X206.053 Y85.984 F4800
G1 X209.245 Y91.277 F4800
G1 X212.130 Y96.744 F4800
G1 X214.698 Y102.367 F4800
G1 X216.941 Y108.127 F4800
G1 X218.851 Y114.007 F4800
G1 X220.422 Y119.985 F4800
G1 X221.650 Y126.043 F4800
G1 X222.530 Y132.162 F4800
G1 X223.059 Y138.321 F4800
G1 X223.235 Y144.497 F4800
G1 X223.235 Y192.827 F4800
G1 X220.235 Y192.827 F4800
G1 X220.235 Y196.872 F4800
G1 X220.720 Y202.613 F4800
G1 Z4.400 F1200
G1 E0.0000 F2400
G92 E0

jmunkki
Posts: 24
Joined: Fri Jan 29, 2016 3:35 am

Re: V 4.1 Retraction at layer change and outline crossing

Mon Nov 12, 2018 12:17 pm

Here's the factory file that produced the gcode in my previous post. Slicing the other part of this assembly (a very similar part) in 4.0.1 produced very good print with no extruder skipping and zero stringing.
PhotoLightTop.factory
(10.24 KiB) Downloaded 14 times

User avatar
DarthRevan
Posts: 453
Joined: Wed Feb 18, 2015 8:29 am

Re: V 4.1 Retraction at layer change and outline crossing

Mon Nov 12, 2018 4:04 pm

jmunkki wrote:
Mon Nov 12, 2018 12:17 pm
Here's the factory file that produced the gcode in my previous post. Slicing the other part of this assembly (a very similar part) in 4.0.1 produced very good print with no extruder skipping and zero stringing.

PhotoLightTop.factory
Disabling Retract During Wipe Movement resolved the mismatched retraction and prime for me in 4.1.0.

nerys
Posts: 118
Joined: Tue Mar 29, 2016 7:47 pm

Re: V 4.1 Retraction at layer change and outline crossing

Mon Nov 12, 2018 5:49 pm

I am also seeing a crazy amount of stringing in travel movements. much more than before. as if its just not retracting.

S3D-Jake
Posts: 237
Joined: Wed Jun 20, 2018 11:45 am

Re: V 4.1 Retraction at layer change and outline crossing

Thu Nov 22, 2018 8:19 am

Thank you for your reports. Our team was able to identify two separate issues from the files you've provided. Avoid crossing outlines, as well as retract during wipe movement will both be seeing more of our development and testing team's attention with our planned bug fix release (4.1.1). The feedback on these two issues came quickly and was in large supply. Our team greatly values the feedback of our users and started investigating these issues immediately. 4.1.1 release is currently undergoing testing and should resolve any known issues with these settings.
"A bird does not sing because it has an answer. It sings because it has a song."

Polyimage
Posts: 2
Joined: Wed Feb 26, 2014 8:56 am

Re: V 4.1 Retraction at layer change and outline crossing

Thu Nov 22, 2018 10:48 pm

Been seeing the same thing and spending many hours trying to get 4.1 to produce a quality part without stringing. Glad I decided to look here, I will go back to 4.0.1 until the issues are resolved.

adrianoalfaro
Posts: 2
Joined: Fri Nov 23, 2018 2:25 pm

Re: V 4.1 Retraction at layer change and outline crossing

Fri Nov 23, 2018 2:34 pm

S3D-Jake wrote:
Thu Nov 22, 2018 8:19 am
Thank you for your reports. Our team was able to identify two separate issues from the files you've provided. Avoid crossing outlines, as well as retract during wipe movement will both be seeing more of our development and testing team's attention with our planned bug fix release (4.1.1). The feedback on these two issues came quickly and was in large supply. Our team greatly values the feedback of our users and started investigating these issues immediately. 4.1.1 release is currently undergoing testing and should resolve any known issues with these settings.
Thank you! Can't wait for the new update.

This is my experience...
Retraction.JPG
IMG_20181123_202847.jpg
1.JPG

adrianoalfaro
Posts: 2
Joined: Fri Nov 23, 2018 2:25 pm

Re: V 4.1 Retraction at layer change and outline crossing

Fri Nov 23, 2018 2:39 pm

Hello,

I have the same issue. I can't wait for the 4.1.1 update.
Retraction.JPG
344.JPG
IMG_20181123_202847.jpg

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