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Jun 15, 2020 at 22:08 vote accept R.. GitHub STOP HELPING ICE
Jun 15, 2020 at 22:08 answer added R.. GitHub STOP HELPING ICE timeline score: 4
Jul 31, 2019 at 15:51 comment added R.. GitHub STOP HELPING ICE OK, it reproduces easily with plain clear/"natural" PLA. Added pics.
Jul 31, 2019 at 15:51 history edited R.. GitHub STOP HELPING ICE CC BY-SA 4.0
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Jul 31, 2019 at 15:45 history edited R.. GitHub STOP HELPING ICE CC BY-SA 4.0
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Jul 31, 2019 at 15:26 comment added R.. GitHub STOP HELPING ICE Still having trouble reproducing it really bad, even with linear advance turned off and bed temp back up to 60°C. Either Marlin 1.1.9 fixed some subtle problems with synchronization of extrusion with motion vs the stock firmware, or there's some environmental issue like ambient temperature or humidity. I'll try later and see if I can reproduce with some clear/natural PLA which seemed to be more problematic, and see if I can find some examples from my scrap box showing the warping.
Jul 29, 2019 at 20:52 comment added R.. GitHub STOP HELPING ICE Someone commented then deleted the comment that I haven't yet added pics. I've had my printer hacked up for a few days and been busy with other things, but I do intend to get back to this. It looks like the problem might (fingers crossed!) actually be soolved by Marlin 1.1.9 with linear advance; I just tried to reproduce the problem for a pic and got a perfect print. If I can confirm that setting K=0 makes it come back, I'll write up a self-answer based on that.
Jul 26, 2019 at 0:47 answer added Nach0z timeline score: 4
Jul 15, 2019 at 16:18 comment added R.. GitHub STOP HELPING ICE @CarlWitthoft: It seems worst with real "natural" PLA (supposedly no additives, clear), but also happens with opaque blue and probably others (I could try if needed). I'll add some pics and further details in the question
Jul 15, 2019 at 15:41 comment added Carl Witthoft Hi, please provide us with the types of PLA (opaque, transparent, filled) and vendor, and, equally important, what temperatures you're using, what print speeds, etc. I've successfully printed various thin-wall objects without any deformation at the corners.
Jul 14, 2019 at 3:53 history edited R.. GitHub STOP HELPING ICE CC BY-SA 4.0
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Jul 14, 2019 at 2:53 history asked R.. GitHub STOP HELPING ICE CC BY-SA 4.0