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Cura Under Extruding

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Please let me know if anyone has any suggestions for why Cura is under extruding in the middle of the "O" in the word "You".  You can actually see through to the tan table in parts of the middle of the "O".  This is after two layers of printing.  Coast is turned off.

5a333c5e1b6e2_CuraUnderextruding.thumb.jpg.9b0ffa9f6bbc7f01a0ee365f3e279593.jpg

Here's Cura's slicer view showing that Cura does want to print a solid in the center of the "O", but as shown above for some reason Cura is under extruding there.  Any help is appreciated.

5a333c5f85a8e_CuraSlicedImage.thumb.jpg.c30637b7d691d0c8b58f2d05263db66a.jpg

5a333c5e1b6e2_CuraUnderextruding.thumb.jpg.9b0ffa9f6bbc7f01a0ee365f3e279593.jpg

5a333c5f85a8e_CuraSlicedImage.thumb.jpg.c30637b7d691d0c8b58f2d05263db66a.jpg

Edited by Guest

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This is definitely a problem with Cura 2.6 under extruding in some small spaces like the center of the "O". It also happens in the center of "B". The weird thing is that it doesn't happen in all small spaces, just some of them.

Does anyone know if earlier versions work better for small spaces or if there is a special setting to deal w/ the issue?

Is anyone else printing text size 9.5 mm and having problems (or success)?

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I'm using a skirt around the part which is 120x110 mm so the exruder is fully primed when it starts printing and the under extrusion happens when filling in other letters as well, but not all of them. In fact some O's get completely filled in and others have under extrusion. This is what is such a mystery to me and the reason why it seems Cura might be the reason for the under extrusion.

Under extrusion does not happen with KISSlicer and Simplify3D when filling in the letters.

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