Overextrusion on Large Surfaces

[unlined 0]

I'm running into a problem with (what I think is) overextrusion on bigger flat surfaces.

I'm tried using default settings and flow adjusted settings without much luck. I'm printing eSun PLA+ at .2 mm layer height, 90% flow, 210 C.

I would say my printer is not properly calibrated, but a friend sliced my STL (100x100x.8 mm square) and the gcode she sent me resulted in a perfect surface.

I'm at a loss of what to adjust.

In the attached picture, the left two squares are Cura sliced. One zigzag, one lines top/bottom pattern. The square on the right was sliced with S3D defaults except @ .2 mm layer height, 90% flow, 210 C.

Since my printer is able to print a good square, I'm fairly certain I'm just missing a setting somewhere.

Any advice would be greatly appreciated!