Not getting smooth top in calibration square

[scampa123]

I've been recalibrating and I did the cube without the top. Z bottom and got it to .40mm...but when doing the solid square I'm not getting a smooth top taker...Any thoughts?

Thx!

[scampa123]

My settings:

PETG
Filament Dia 1.87
Ext Multi: .70
Extr Width Manual: .40

[Jules]

Number of top layers?
Infill?

[scampa123]

Top Solid Layers 3
Infill 100%

[Jules]

That's at 100% infill? (Serious underextrusion problem.)

[scampa123]

What should I do to up the extrusion? I had calibrated with the square without the infill to .40mm

[3dPrintingMD]

Most Filament is 1.75mm, so 1.87 does not make sense, unless it is way out of spec.

With that said, the extrusion multiplier should be about .86 - .89. Your's is too low.

[Jules]

Yeah....try 1.75 mm diameter and 0.90 for the extrusion multiplier. (You might find it doesn't impact the wall thickness much.)

[scampa123]

That seemed to work much better!! Thank you!!!

[scampa123]

So that worked for the overall calibration square but I noticed something odd...

I'm basically printing a rectangle, a base for a circuit board, and what I am getting on the initial outlines are dots vs a smooth line...hopefully the picture helps: