Retraction problem?

[gregwar 1]

Hello all,

On most of my parts, I think that my Ultimaker2 doesn't retracts well the filament. For instance, we can see such things:

You can clearly see the travel moves on the top layer of this part, this is not normal

Any idea how I could avoid this?

Thanks &

Merry christmas :wink:

 

[gregwar 1]

My current config:

PLA

0.1mm layers

235°

Plate 70°

Printing 40mm/s, Travel 150mm/s

w/ Brim (printing directly on glass)

Default retraction settings (never changed it)

 

[bigmouse 6]

First thing I would try is lowering the temps. Like 210/60, and for smaller parts 190/60, makes a huge difference to the finshed look!

 

[gregwar 1]

Actually looks like it doesn't retract at all at this points

(So this is not exactly a retrction problem)

 

[gregwar 1]

Printing at a lower temp leads to underextrusions (the extruder slips on the filament)

Maybe I should upgrade the feeder?

[pm_dude 27]

Its not a retraction issue. Its combing. Try disabling Combing in expert settings->retraction section.

Combing is used to reduce retractions and simply travel on the infill instread. It does leave a mark.

You can also use the retract on combing plugin but cant find the path at the moment (check the cura section in the forum)