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I suddenly have a print quality issue, only with the top layers

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I am not sure what has happened, but all of a sudden my prints have messed up tops.  I am printing in the same PLA that I always used, and I am using a CR-10 with no mods.20171107_090707.thumb.jpg.c046a2e7f8fc40a31f540476c3462cd0.jpg 20171110_103556.thumb.jpg.baf0d101b4edb1615d7b1cd0b313b3d5.jpg[/media]  I am just stuck now on what to do. the first pic is with the 2mm top setting I have always used, and the second is with a 5mm top setting?????



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I see 4 issues. which issue do you refer to?

The "hole" issue in the top part is likely due to a recent change in Cura 3. There is a ton of discussion in github. The fix for now is to go back to Cura 2.7:


If it's one of the other issues maybe circle which issue is bothering you or describe it - maybe:

infill overextrusion bordering shell

random lines crossing top surface (e.g. 3 of them on lower pic)

when print stops it leaves a bump and thread

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