Underextrusion?

Hi,

I was printing a circular object and I have observed an interesting phenomena:



There are layers being printed on top of the infill. While the center of the object is perfect, the peripheral areas seem to have holes.

How can I fix this problem? Do you think it is some kind of underextrusion? Could it be due to low acceleration settings? What can I do to make a more homogenous extrusion?

Thanks

I've seen worse first top layers...
AFAIK the first layer above infill is sliced like bridging. Check your slic3r settings for bridging speed and extrusion multiplier.
Maybe you are printing a bit too hot and it shows, while the printhead is slow.

What is intriguing for me is that the holes are not at the edge, where I'd suppose there would be problems due to extrusion differences while changing directions. Also the infill is much more discernible close to the peripheral areas, as if they had different thickness levels.

In my S3D setting the first surface layer after the infill is not processed as a bridge (probably due to my minimal threshold settings)

Edited 1 time(s). Last edit at 03/25/2018 05:02AM by drmaestro.