Weird slicing issue

[rwalker43 0]

I'm using Cura 4.11.  I created a model in Fusion 360, which is a platform with text horizontally on the top.  When I slice the model in Cura and look at the layer view, the model has a total of 43 layers.  The text begins printing at layer 30, however, Cura starts part of the text at layer 27!!  When viewed in the slicer, this appears as two little dots.  When the model is printed of my Ender 3 Pro, the surface of the print has irregular lines between the edge of the print and those dots.  The text I am printing begins with an uppercase M.  Those two dots line up with the top of the verticals of the letter.  Any suggestions?  I have printed this model using Prus Slicer, but not had this issue.  Any help or direction would be greatly appreciated!

[GregValiant 1,250]

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.

[rwalker43 0]

Thank you for the quick reply and also for the under-extrusion tip.  I've attached the 3mf as requested!

MG Base v8.3mf

[GregValiant 1,250]

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 January 25, 2022 by GregValiant

[rwalker43 0]

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!

 

[rwalker43 0]

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!  SUCCESS!!!  Thanks again!

 

[GregValiant 1,250]

Experience with such things.  These on my single extruder printer.  The windows and curtains on the trailer/sleigh were glued on.

Edited January 26, 2022 by GregValiant