estimated weight vs. real weight

[buresdynamics]

Hi together,

some thoughts about weight, inconsiderable extrusion and the extrusion multiplier...

Printer: Ultimaker 2 extended with Olsson Block, printing with 0.8mm nozzle

Am I right that "infill extrusion width" is only used for the "real" infill and not for solid top/bottom layers?
If so, I would suggest to make this clearly recognizable in the software.
I had issues with not really dense top layers (see quality guid "holes and gaps in the top layers") and tried to get a workaround by playing with the infill extrusion width - without success.

Furthermore I noticed that the printed objects were not as heavy as they should be. Even if I - apart from the top layers - did not had the impression of underextrusion - everything else worked and looked fine.

Because I read here and there that people using s3d / Ultimaker used the "extrusion multiplier" to extrude about 10-15% more plastic, I tried playing with this too. Actually I was not a friend of this parameter... Then I weighed some parts and compared the results to the computed values of s3d and noticed an average deviation of 15%. After changing the multiplier to 1,15 most of the problems seem to be solved: The weight is in tolerance, large top layers look fine (and dense).

But...
In small areas and/or small surfaces it now seems that too much plastic is extruded. The top layer lines are almost swelling over, especially near the perimeter lines (after the 180° turn of the infill). Now this obviously is not a problem which a parameter in s3d could solve, but did anyone have or hat similar observations?

[CompoundCarl]

Yes, the "infill extrusion width" on the Infill tab only adjusts the width of the infill inside the part. The generic "extrusion width" value on the Extruders tab is used for everything else.

And for your top layer issues, you may also want to try more top solid layers. The troubleshooting guide explains all the other things to look at.