Thank you for the quick reply and also for the under-extrusion tip. I've attached the 3mf as requested!
In the "Top/Bottom" settings - set the "Skin Removal Width" to 0.1.
Cura is removing the "skin" from under the letters where the letters are wide enough that the "skin removal width" would apply. If you look close you'll see that the "M" in particular has wider parts at it's points.
For a comparison - set the "Skin Removal Width to 2.0 and see what happens.Edited by GregValiant
Thank you!! This seems to have resolved the issue! It was making me nuts! Great explanation of the issue and the resolution! Trying the print now!
If you can share the model use the "File/ Save Project" command in Cura and post the 3mf file here.
Off topic, that top layer is under-extruded by 10% or so.
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