Solved Number of layers does not match height

[bren 0]

I have a little cube 10x10x10 mm as test. I slice it with cura 5.1.0. In preview Cura says that there ale 33 layers but this is non right.  32*0.2 + 0.3 = 6.7 mm instead of 10.

If i print the cube with mi Anycubic i3 mega it he will be 10mm tall. no problem.

The problem arises if i want to pause at height to insert something. If i will made a pause at height aproximateli at the midle of he cube height i have to say  to pause at sixteenth layer. but that means 15*0.2+0.3 is 3.3 mm insted of 5 mm.

Can someone please tell me where is the error?

I attach the files .3mf and the gcode.

Thanks in advance.

prova tre.3mf AI3M_prova tre.3mf AI3M_prova tre.gcode

[GregValiant 883]

You have "Use Adaptive Layers" turned on in the Experimental section.  Your Maximum Variation is 0.10mm.  Since there are no curves to calculate adaptive layers for - Cura figures each layer height +0.10 since that's what it is being told to use.

So the math (for this model) is really 10/.3 = 33.3.  Since Cura will not print a layer that is outside the model you end up with a model that is 33 layers tall and 9.9mm instead of the full 10mm tall.

You can see in the Gcode that the last Z height (gcode Layer:32) is:

G0 F600 X107.323 Y52.765 Z9.9
G0 F7200 X99.504 Y45.473
;TIME_ELAPSED:226.715676
;LAYER:32

And Layer:31 went down at Z=9.6.

 

Turn off "Make Overhangs Printable" in the Experimental section as well.  Like "Remove All Holes" it's a niche setting that is handy when you need it but can just be confusing when you don't.  Horizontal holes will all print with a chamfer inside because it's an overhang and Cura is making it printable.

[bren 0]

thangs a lot! it works.