I haven’t tried this one yet and it probably won’t be a huge problem, but anybody with advice, I’d appreciate it. Made a model in Sketchup, exported the STL, pulled into Cura and noticed that some of the paths don’t look to be complete.
The Sketchup model
The Cura preview with incomplete paths circled. Normal 0.16 profile unmodified.
I watched the animation, but really didn’t understand WHY it did some of the starts and stops it did resulting in those areas.
It may not be very helpful, but i will say that this sort of thing is common.
It looks like you only have one outer shell for the print, so there isnt really much advice i can give you. Sometimes altering the wall count can help address this, as well as settings for gap fill or single extrusions.
It seems to just have to do with the fact that the extruder has to draw a shape across a line, and so it doesnt see a path to do that cleanly.
Wall overlap also might help. i dont know what cura has for settings in these regards as i use a different slicer.
It’s because those perimeters are smaller than your nozzle diameter, so the slicer is not fitting extrusions in those areas. I assume the arachne engine also considers them too small, so that’s likely a fairly fine detail. For small surface details, you can either use a smaller nozzle, which increases time drastically, or you can try printing at about a 45-60 degree angle using support material to hold it up.
I think Cura 5.0 and later has variable line width per default so if you are using an earlier version you could try upgrading to 5 or later. Also, you might need to adjust minimum wall line width and/or minimum thin wall line width to a lower value…
Thanks all!
Seems like there might be several possible approaches.
SETTING
Try changing the line thickness in your slicer to match the minimum wall thickness, 0.35 mm is practical, and 0.3 mm may be possible with a 0.4 mm nozzle.
MODEL
Scale up your model up so the minimum line thickness is >0.4 mm.
Modify your model to have wall thicknesses >= to your line thickness, 0.4 mm.
PRINTER HARDWARE AND SLICER
Change nozzle size to your minimum line thickness, current versions of Cura are capable.
Thanks. Some specifics I can try.
There’s a Cura setting “Print thin walls” - it does exactly what you need. See e.g. here: How to get Cura to slice my 0.4 mm walls? - Ultimaker Cura - Ultimaker Community of 3D Printing Experts
EDIT: In Cura 5 there’s even more control - I guess that’s what RLEE referred to: why is there still "Print thin walls" in Cura 5? - Ultimaker Cura - Ultimaker Community of 3D Printing Experts
