Potential Under-Extrusion at the Perimeter
I have been having this issue consistently and I cannot seem to get to the bottom of it. I keep getting gaps in the perimeters and where the solid infill meets the perimeter causing issues in the finish of the print. I am also getting some misshapen circles as you can see in this test piece. Anyone have any ideas on what could be causing this.
I've tried changing, extrusion width, extrusion multiplier, calibrating e-steps, recalibrating printer, nyloc bed levelling, changing the live-z, changing filament, changing model, changing nozzle and nozzle size, changing from arachne to classic and slowing print speeds etc. Nothing seems to work. I am using standard prusa presets so no crazy speeds anyway. I really need to get this sorted asap as I need to get a print done
RE: Potential Under-Extrusion at the Perimeter
Its not software, this is a symptom of a physical printer issue. Check the usual suspects, pulley grub screws, belt alignment and tensions etc.
RE: Potential Under-Extrusion at the Perimeter
While I agree with Neophyl above that the printer should be inspected to ensure no physical cause, that does look like a flow control calibration problem to me. I would download SuperSlicer, which is a fork of PrusaSlicer that adds various calibration prints, and run the Filament Flow Calibration. It also sounds like you're on an MK3 family printer (which I don't have, so I'm not as familiar with) and you might want to do this Linear Advance calibration https://help.prusa3d.com/article/linear-advance_2252
I'm sure @neophyl is right. Make sure your filament is dry (what are you using? A lot of white filaments are tricky) and then run a first layer 'Z' calibration and show us the result *on the print sheet*. If you are concerned about the body of your prints then a small cube would help us too.
It's always easier to diagnose from familiar designs.
Cheerio,
RE: Potential Under-Extrusion at the Perimeter
@jasonmakesstuff
On which printer was this printed? If it's a Prusa MKx - have you also inspected the hotend, especially the short PTFE tube?
wbr,
Karl
Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen.
RE: Potential Under-Extrusion at the Perimeter
Hello, it's a PRUSA MK3S. I haven't inspected the hot end further than changing out the nozzle and cleaning with a brass brush.
RE: Potential Under-Extrusion at the Perimeter
This was just a white PLA from Fillamentum however, the issue doesnt appear to be material specific as I have had the same issue with multiple other brands and colours including prusament. I agree I could print a small cube to test it I shall endeavour to do that soon.
I'm sure @neophyl is right. Make sure your filament is dry (what are you using? A lot of white filaments are tricky) and then run a first layer 'Z' calibration and show us the result *on the print sheet*. If you are concerned about the body of your prints then a small cube would help us too.
It's always easier to diagnose from familiar designs.
Cheerio,