Sorry for the late response. Thanks for taking the time to analyse my gcode! It makes sense what you came up with. The thing is that I already have lowered the retraction speed and the overall print speed while testing. This issue occoured with very low flow settings as well. It is a good hint though. I will take it into account for future prints!
I think this is a combination of issues, too much flow and great pressure loss while traveling mainly. The option “extra length on restart” in orca definitely makes a difference. It is hard to calibrate though and I cant find any information on how the extra length is calculated. Relative to the travel move?
I disassambled my hotend and everything looks fine…
Hi vincent, we were having the same issue!!
when using 0.6 nozzle after some travel move line start is underextruded, we print low flow in PETG (8mm3/s) at maximum 70mm/s with a volcano block
Some years before when I swaped old v6 o a volcano I’ve noticed that I’ve got more consistant prints and was able to lower hotend temp from 235 to 228 in PETG, at the time using Simplify and a reprap running on a ramps I’ve no issue at all. That’s what drives me crazy !!!
Today we have the issue running on klipper and marlin 2.0, I’ll try slicind in simplify again to print in the marlin 2 printer
In my case the issue is also most present when printing PETG. Lowering the temp helps but decreases max flow at the end.
I havent resolved my issue completely but setting the seam position to closest and defining a small extra length on restart value in orca slicer makes the issue go away except for very large prints. Setting my travel speed from 200mm/s to 400mm/s improves it as well which makes sense since there is less time to lose filament.
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