Ugly layer change

I'm playing a lot with my delta printer nowdays but i can't manage to get my layer changing place to look great. It always looks terrible and destroy overall print looks. Is there any possible way to get rid of it? I'm using Slic3r 1.1.7.23 with 3-3.5mm retraction on 40mm/s speed and there are no strings between prints. And my extruder is bowden one. Can anyone help me?


Some photos of this ugly layers:

[imgur.com]

Woman (it was 0% infil just for the test) was made using Seam position: Aligned

The other part was made using Seam position: Random

These blobs on the perimeters of your prints are filament that comes out when the nozzle is lifted for the next layer.

The problem is the pressure left inside the nozzle while changing layers.
Check if there is an option for retract on layer change.
Otherwise you should try to increase your z-speed. So the filament has less time to squeeze out..

I totally forgt about this option. When i turned it on it seems better but instead of big blob there is a little hole and a small blob. Is there any solutions?
[i.imgur.com]

The blobs are always a big deal for every printer.

I also have these blobs in every print.
Most of the time my printer changes layer at the infill, so you can't see blobs.

I think slic3r has an option to change layer always at the infill?

Did you increase z-speed?

All my travel moves are set to 150mm/s and i think thats enough.
There is no such option in slic3r sadly or am I missing something?
What slicing program are you using? I might try something new if it would help.