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So I wasted another 100 metres or so of filament on this print with combing turned off, there was very little stringing until it got near the top of the print and then it seemed to make thicker strings than all the previous attempts.
So anyway I viewed the layer view preview with the travels shown and it was generating travel paths in seemingly random places that went across the print where there was no material to be printed (just like the print did), it looked like a spider had moved in and made a web. So then I sliced the same file for another printer I have and all travel paths were confined to places that had material printed, seemingly eliminating the opportunity for strings to be drawn across the void in the print.
Then I loaded the model back into Cura with the original profile for the first printer and sliced it again with all the setting as they were when I was having problems and checked the travel paths and this time they are all on printed surfaces. Nothing changed except the way Cura decided to plot the travel paths. So it seems like Cura can sometimes plot the travel paths in a way that leads to stringing across a void.
I don't know if it's a bug or just a random slicing error, it's never happened before. I will be sure to check the show travels box when I check the layer view from now on though.
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Reverse_Engineer 0
So I wasted another 100 metres or so of filament on this print with combing turned off, there was very little stringing until it got near the top of the print and then it seemed to make thicker strings than all the previous attempts.
So anyway I viewed the layer view preview with the travels shown and it was generating travel paths in seemingly random places that went across the print where there was no material to be printed (just like the print did), it looked like a spider had moved in and made a web. So then I sliced the same file for another printer I have and all travel paths were confined to places that had material printed, seemingly eliminating the opportunity for strings to be drawn across the void in the print.
Then I loaded the model back into Cura with the original profile for the first printer and sliced it again with all the setting as they were when I was having problems and checked the travel paths and this time they are all on printed surfaces. Nothing changed except the way Cura decided to plot the travel paths. So it seems like Cura can sometimes plot the travel paths in a way that leads to stringing across a void.
I don't know if it's a bug or just a random slicing error, it's never happened before. I will be sure to check the show travels box when I check the layer view from now on though.
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