Lots of unexpected travels - what am I doing wrong?

[sebhoff 1]

I'm a beginner - so please be gentle. 🙃 Probably doing something silly - but I hope it's OK to ask.

 

In some of the projects I'm trying to print, I have a massive amount of travels in places where I don't really see the need for them - one of the relevant projects is attached. Why does Cura do this? Is this something that can easily be avoided? I get a fair amount of under-extrusion and stringing at the beginnings of new layers like this (and am working on optimising the retraction settings), but it would be so much easier if the unnecessary travels could be avoided. Or am I misinterpreting things?

 

Sebastian

CE3S1_ShwaButton_Cutter_v1.3mf

Edited March 2, 2023 by sebhoff
minor edit for punctuation

[GregValiant 1,251]

There are a couple of things going on.  When I slice your model with your settings at least three of the walls disappear.  The line width is too wide and Cura can't fit the nozzle in there.  You can see they are gray in the shot below.

 

This is with a 0.4 nozzle at .5 line width.  You can see the travel lines in blue.  You have "Avoid Printed Parts When Traveling" enabled so the nozzle moves to avoid the print.

 

This is with "Z Seam Relative" at 0,0 and "Avoid Printed Parts" is turned off.  This is about as good as this model will get as far as travel moves go.

 

[sebhoff 1]

Excellent - many thanks for these pointers. I still have a lot to learn and it's definitely not plug&play... 😆