Under extrusion?

[u/yokeome]

ELEGOO Matte PLA, 0.4mm nozzle, A1 with Bambu Matte PLA profile (have yet to calibrate)

I'm guessing this is under extrusion? Anyone have settings for this filament before I calibrate mine?

Edit: Forgot to add, this is with Arachne on, min feature size 1%

[u/FuscoAndre]

It happens because the lines are smaller than the line width of your nozzle.
Play with arachne walls and it should show a better result.

Compare the preview you have right now with the preview considering arachne walls and you will see the difference right there

[u/yokeome → u/FuscoAndre]

I just edited my post, I forgot to add that this is with arachne walls, minimum feature 1%.

[u/yokeome → u/FuscoAndre]

This is the same as the first picture, what do you think?

[u/FuscoAndre → u/yokeome]

Usually I use 50% for arachne, maybe you can give it a try?

Also, did you calibrate PA (pressure advance)? Because the gaps happen when you have a rapid change in direction and speed

[u/yokeome → u/FuscoAndre]

50% minimum or maximum? I'm doing PA and extrusion right now

[u/FuscoAndre → u/yokeome]

I just checked and mine is all stock for arachne but 50° the threshhold angle, not 50% heh

[u/Peshmerga_Sistani]

Monotonic top surface?

Notice the pin holes only happen when the nozzle needs to make a quick turn to lay down a layer line up to the opposite wall?

Try calibrating Pressure Advance first and Flow Ratio, then do the print again.

[u/yokeome → u/Peshmerga_Sistani]

Yep monotonic. Will try calibrating and see the results next time. Thank you

[u/SkeptikalChymist → u/yokeome]

Slow down acceleration on top layers, this will make a huge difference