Help diagnose print/filament issue
 
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Brian Parfitt
(@brian-parfitt)
Active Member
Help diagnose print/filament issue

Hello all. I'm looking for some help identifying is happening here. I am printing Polaymaker PLA pro on my Core One+.

It looks like I am getting some artifacts at directional changes.. i.e close to the edges of my print, around holes etc.

I'm using print settings from Polymaker:

Nozzle temp: 215 (first layer), 210 all others

Bed Temp: 60

Max volumetric speed: 15 mm3/s

Retraction length: 1 mm

Retraction speed: 30 mm/s

Any idea what is happening here?

Thanks in advance!

Publié : 20/04/2026 1:12 pm
jan.d.slay
(@jan-d-slay)
Reputable Member
RE: Help diagnose print/filament issue

That's perfectly normal if the flow rate is too high.

You'll need to use calibration tools to figure out how to adjust your filament

https://github.com/hyiger/filament-db

https://github.com/hyiger/PrusaSlicer

Do you know where to adjust the flow rate in the slicer?

Mods for Core One: Core One HT 450 degrees, Comfortable display , Very fast print start and Reducing noises
Mods for Prusa XL: Very fast print start

Publié : 20/04/2026 5:40 pm
hyiger
(@hyiger)
Famed Member
RE:

 

Posted by: @brian-parfitt

Hello all. I'm looking for some help identifying is happening here. Thanks in advance!

What nozzle are you using?

Publié : 20/04/2026 5:42 pm
Brian Parfitt
(@brian-parfitt)
Active Member
Topic starter answered:
RE: Help diagnose print/filament issue

Prusa High Flow .4mm nozzle that came with my Core One.

Publié : 20/04/2026 6:19 pm
Brian Parfitt
(@brian-parfitt)
Active Member
Topic starter answered:
RE: Help diagnose print/filament issue

Just a little more follow-up on this item. I see that I can tune my extrusion multiplier and have found a video which demonstrates generating a calibration cube to calculate a multiplier. Seems like the next thing I should try out. Am I headed down the right path here?

Thanks again for the tips!

B

Publié : 20/04/2026 7:24 pm
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