Saw this post. The problem is that..
a) 2.85 drips more at high speeds/temps. So @flowalistik is right, lower temp/speed
b) If you want to keep speed. Increase avoid travel paths on advanced tab ins3d. Is called 'Avoid crossing outline for travel movements'.
Ofc, if you disable 'Only retract when crossing open spaces' you should get retractions when moving from a tto b, but um2+ feeder can't handle that amount of retractions, unless you upgrade it to bondtech or something better. But that's for other day.
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flowalistik 181
I'm going to summon @neotko as he's the expert in retractions and Simplify 3D.
Seeing the model you're trying to print, I assume you've set the number of walls to fit the design you're printing (mold? cookie cutter?). The problem I see is that the line in your model isn't regular, and that causes the nozzle to jump from one place to another, which leads to stringing.
As I can't recommend any solution rather than lower the printing temperature, I'd recommend you to modify the model to get regular wall width.
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