Best posts made by bsilver8192

Works great for me. Solved 2 problems I was having with 3.5.2, both seem related to synchronization of an extruder on an expansion board. See https://forum.duet3d.com/topic/37435/extrusion-gaps-after-arcs for one of the problems and my config.g for reference on what features I tested.

The other problem was sharp corners looked like they had too much pressure advance, even though I was using 0 pressure advance. They were under-extruded going into the corner (while the printer was decelerating), and then over-extruded after the corner. I had assumed it was due to the huge SuperVolcano hotend, but upgrading to 3.6.0-beta.4 fixed it.

Thank you very much! 3.6.0-beta.4 completely solved this, works great with G1 segments or G2/G3 arcs now.

@droftarts said in 3.6.0-beta.2 Pressure Advance Issue?:

@T3P3Tony Maybe this one is related? https://forum.duet3d.com/topic/37435/extrusion-gaps-after-arcs

Checked the attached Gcode, all G1 moves not G2/3 arcs.

Ian

(OP from the linked topic) these still sound related: so far I've only tested with 3.5.2, and the problem in this topic was reported to also happen with G1 in 3.5.4. The big difference I see is that I have PA turned off completely though. I'm planning to test with 3.6.0-beta4 tomorrow, and I'll report back in my topic about how it goes.

Also hearing about issues with holes is helpful, I haven't tried printing any parts with large holes so I'll add that to my list now.

For anybody looking in the future, that did not in fact work. I went all the way up to M570 H0 P60 T40 and still had spurious heater faults. https://github.com/Duet3D/Duet3Expansion/pull/23 seems to have really fixed it, without needing to change M570 from the defaults at all.

bsilver8192 opened this pull request in Duet3D/Duet3Expansion

closed Fix heater faults in the presence of extrusion temperature boost #23