Is there some other setting I'm not aware of that influences these slight over-extrusions in places where the print head is switching directions? In this case it doesn't matter, but in extremely narrow places it tends to almost pile up a little bit.
Pressure Advance and Z-Height are dialed in optimally, can't do sth. about those without either risking bed adhesion (height) or suffering under-extrusion in other places (PA). Also pretty sure the extruder stepper is dialed in properly.
#3DPrinting
Otto Glöckner
in reply to Natasha Nox 🇺🇦🇵🇸 • • •Natasha Nox 🇺🇦🇵🇸
in reply to Otto Glöckner • • •Paul von Drayventhal
in reply to Natasha Nox 🇺🇦🇵🇸 • • •You can fix this there by lowering the power output for the laser near the edges of your engraving area.
Natasha Nox 🇺🇦🇵🇸
in reply to Paul von Drayventhal • • •@Drayventhal I expected it to be solved after the Pressure Advance calibration (which lowers / stops the extruder motor before edges to make sure the nozzle doesn't spit out too much material). Sounds like the equivalent thing to lasers lowering power output.
Apparently there's even more to it though.
Paul von Drayventhal
in reply to Natasha Nox 🇺🇦🇵🇸 • • •Natasha Nox 🇺🇦🇵🇸
in reply to Paul von Drayventhal • • •gafu
in reply to Natasha Nox 🇺🇦🇵🇸 • • •If you want stable parts, this is the little overpressure you want to have.
So this is fine.
You can reduce the perimeter/infill overlap percentage in the slicer settings to reduce this, should be around 15% of extrusion width.
And also this effect is where you see if your feed% are right to the (not everytime constant) filament diameter *mid print* to adjust it when needed on the go.
Natasha Nox 🇺🇦🇵🇸
in reply to gafu • • •@gafu It's causing problems in narrow sections though, where it piles up so much across multiple layers I can sometimes hear the head rumble over the material. So I need to do something about it.
The overlap should be at 15%, I remember going through that setting. I'll keep investigating.
gafu
in reply to Natasha Nox 🇺🇦🇵🇸 • • •You can try to get overlap down a bit, maybe 10% in a first step, and slightly reduce overall feedrate by 2 or 3% for critical print objects, but you loose a bit of printing process safety in case of filament diameter tolerances.
I would save these settings in a special slicer profile and only use it for objects with critical pattern.
The additional material at the corners ensure a good bonding between perimeter and top/bottom layers and perimeters and infill, so its a bit more than needed to be shure it will work in the end.
The better your printer runs (no backlash on the x/y axis and precise material dosing/working extrusion path) the more you can get lower with overlap settings
Natasha Nox 🇺🇦🇵🇸
in reply to gafu • • •Someone mentioned that there are slicer settings that specifically address the issue in narrow spaces though, I'll go with that first before going with what sounds like overall less reliable settings. Didn't have the time to test that, or even look whether PrusaSlicer has those.
mastodon.social/@Otto_Gloeckne…
Otto Glöckner
2025-08-31 16:02:34
gafu
in reply to Natasha Nox 🇺🇦🇵🇸 • • •Maybe iam outdated at this point, the old slic3r which was forked from prusa back in the days doesnt had such compensation, and the firmware related things linke pressure advance cant prevent from "on purpose built in material overload"
So i personally don't know about such thing, if it exists.
gafu
in reply to gafu • • •Natasha Nox 🇺🇦🇵🇸
in reply to gafu • • •