Think it pressure advance?

[PFarm]

I've never had this issue before so I've changed something in Orca slicer unknowingly. It is like this on all four sides. Ran fine at PA 0.05 before. Any suggestion would be great.

 

Edited March 24 by PFarm

[mvdveer]

May still be. Have you tried toggle pressure advance in the filament section and see if it makes a difference? Or did you perhaps enable the Adaptive pressure advance?

[NikosSprocket]

Are all four corners look the same?

[PFarm]

Yes all four corners are the same.

[gueee]

13 hours ago, PFarm said:

Ran fine at PA 0.05 before.

I don't know your setup, but a PA of 0.05 seems quite a lot to me. On my setup I would expext the prints to look like that with that high of PA value.

What nozzle size, filament type and extruder setup are you running? 

For me with most filaments and 0.6mm nozzle size, goliath short hotend it usually ranges from 0.018 - 0.039 at most.

0.4mm nozzle size needs a little higher PA values, but nothing near 0.05.

 

11 hours ago, mvdveer said:

Or did you perhaps enable the Adaptive pressure advance?

That might be a thing to check ....

[PFarm]

Thank you, everyone, for the reply. It turns out the pressure advance in the filament section in Orca got unchecked. The 0.05 was what I was seeing in the Klipper Extruder IU section, which is the default from the Klipper setup.  All prints are back to normal.

Edited March 24 by PFarm

[therm_virtual0y]

8 hours ago, gueee said:

I don't know your setup, but a PA of 0.05 seems quite a lot to me. On my setup I would expext the prints to look like that with that high of PA value.

What nozzle size, filament type and extruder setup are you running? 

For me with most filaments and 0.6mm nozzle size, goliath short hotend it usually ranges from 0.018 - 0.039 at most.

0.4mm nozzle size needs a little higher PA values, but nothing near 0.05.

 

That might be a thing to check ....

My settings for PA are all around .04-.06.  Am I mistaken that as the number gets higher, the less filament gets extruded for the calculation?  That’s why if you run the PA tower, you get fat corners to start and as the PA number increases you then get wall separations at the corners.  The PA I choose is between these points and for me is pretty consistent at .04 to .06 depending on the filament.  I’m using the stock Orca speed settings for Voron 2.4 so not super fast.

[gueee]

I usually tune my PA values thoroughly , cause I use adaptive PA and usually max out the flow rates of each filament, so that might be a reason for the optimal PA values I'm getting.

That tuning is a necessity, since I'm running a small print farm and need to push out parts fast, ideally 24/7.

On top of that I almost don't print standard filaments like PLA, PETG and such, but rather PC, PA, ...

The goliath's long meltzone and bondtech CHT nozzles I'm using might have an additional effect.
I'm using PA since day one and never got any optimal value above 0.048 and that only with a certain PA6 filament and 0.4mm nozzle, so I'm still somewhat surprised about those PA values.

Admittedly I never talked to people about actual PA values and relied on my own tuning results, so maybe I'm the exception and your results are more regular than mine.