After gap layer quality

[chris101]

So when you print a layer, with gaps (whatever this may be... creating a hole or small extrusions on top of a flat plane) the print quality for another 10mm is usually pretty bad. I feel it is due to the retraction setting, but not sure which way to shift the retraction amount, and by how much - I have tried a few variances but with not much luck. Can anyone help?

[richardphat]

Can you post a picture please?

[Davo]

What firmware, slicer and printer are you using?

[chris101]

DSCF3020.jpg

Velleman K8200
Slic3r 0.9.8


As you can see though in the image below, the rest of the print quality is pretty good...
DSCF3021.jpg

[3dkarma]

Looks like you're over-extruding, your belts might be loose and you may have some z-axis wobble thrown in for good measure. I'd solve those issues before looking at retraction.

Have you run through the calibration procedure on the reprap wiki yet?

[Davo]

Slic3r is at 1.1.7 now, although this probably isn't the cause of your issue.

Do you have some acceleration/deceleration set? I see no problems along most of the print, only near where the perimeter has lots of angles.

Also, how many perimeters and what percentage infill? I use 35% honeycomb infill and four perimeters.

[chris101]

OK, so I gave my belts a tightening up, and changed the retraction from 1mm to 3mm and that seems to have solved the issue. Did a test part, similar to the one in the photos (but smaller, just to reduce the wastage) and it was a lot better.
Thanks for the replies