1.2.3 Pressure Management and Retraction bug #2470

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ccavanaugh opened this Issue Dec 31, 2014 · 5 comments

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@ccavanaugh

I tried the new Pressure management with a K factor of 8. When used in combination with retraction enabled (10 mm) , the filament was retracted significantly multiple times until it was half way up the bowden tube before I stopped the print. This occurred while laying the perimeter of the first layer.

Resliced without pressure management enabled and everything was okay.

@alexrj alexrj added this to the 1.2.5 milestone Jan 4, 2015
@alexrj alexrj added a commit that referenced this issue Jan 5, 2015
@alexrj Unit test for pressure advance. #2470 3332282
@alexrj
Owner
alexrj commented Jan 5, 2015

@ccavanaugh, I failed to reproduce the issue. I also wrote a unit test that succeeds.

Could you provide more details for reproducing that? STL file and configuration (File -> Export config…). Thank you!

@alexrj
Owner
alexrj commented Jan 5, 2015

Wait - I can reproduce it...

@alexrj alexrj added a commit that referenced this issue Jan 5, 2015
@alexrj Bugfix: pressure regulation accumulated too much retraction and didn'…
…t discharge at the end of print. Includes regression test. #2470
0f7933c
@alexrj
Owner
alexrj commented Jan 5, 2015

Okay, I fixed this and added a regression test. Thank you!

@alexrj alexrj closed this Jan 5, 2015
@ccavanaugh

Thank you!... Will try again after the next release. I'm tying to run nylon with heavy retract and looking forward to seeing if it improves print quality.

@braddo99
braddo99 commented Jan 9, 2015

Terrific, had this problem too, massive retraction (and I couldn't see it in the gcode for some reason?)

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