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only vertical strings in infill

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Hi Guys,

I got an ultimaker 2 and have some problems printing out objects. Maybe somebody could help me, I got some problems with infill.

The infill doesnt look like it should. Its only vertical lines (but they are printed clearly) instead of a mesh

This is a picture how the infill should look (cura)


Here is a screenshot how it looks when printing:


This problem occurs in lots of prints.

Im using Cura 15.02.1 (Printer firmware 14.x)

printing at 2mm³/sec - pla 210 degrees about 50mm/sec

Infill 25 % same speed as rest of the print

The outside object surface is very good

I cannot find anything on the internet about this problem. (The other premade models from SD-Card print its infill correctly ) It occurs on lots of objects i want to print with Cura


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Try lowering infill to 24% or lower. The pattern changes when you go over 24%. Go into layer view and look at the infill at an angle while zoomed in, then step through the layers. You'll see what I mean when you go back and forth between 24% and 25%.


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It's not just the size of the grid, it's how it's being laid down. Under 24% both directions are laid down at the same layer. Over 24% and only one direction is laid down on each layer. So on layer n you get lines going up and to the right, on layer n+1 you get lines going up and to the left, rinse repeat.


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