Wall thickness not printing correctly

[JRReefer]

Hello

I am very new to Fusion 360.  Love the product so far and can't wait to learn more each day.  I am trying to understand why my printer slicer is not printing the wall thickness I am asking to print.  Here is what I have:

• It is a hollow cube where the wall thickness is supposed to be 0.4 mm
• The body measures 20mm x 20mm x 20 mm height.
• I have tried both the shell command as well as extruding an offset.  Regardless of what I do, my cube prints perfectly 20 x 20 x 20 but the wall thickness is not 0.4 but 0.8.

When I am done with my object, I tried to export the body to STL and then import that into Cura.  Regardless of what I do, the wall prints too wide.  I have also tried exporting the file, instead of the body, and same thing.  I have also tried exporting the file as 3mf type, but it does the same thing.  I have even tried to put all my dimensions into variables and still the same thing.

I don't think I need to tune the printer, as I have done extensive tuning already.  the cube prints exactly 20 x 20 x 20 (outside dimensions) which is what I designed as. 

I am sure I am doing something stupid 😞

[davebYYPCU]

So what is the wall setting?  Some slicers count perimeter walls, some are dimensions.

Some have a special setting to turn on.

Might help.....

[etfrench]

Can your printer print .4mm wide?  The minimum on mine is .5mm with a .3 nozzle.

[JRReefer]

Hi

Regardless of what I set the number of lines per wall, it will still print more than two lines.  One setting that seems to have a positive effect is the line width.  If I set it to 0.3 then I can get a thinner wall.  I am starting to think that this is an issue with the slicers and not 3D fusion.  I am going to do some tests and will report back.  If anyone knows the answer 100%, I would really appreciate it.

[davebYYPCU]

Not a Fusion problem, 

try that setting at 0.4mm,

1mm is default - 2.5 walls, Slicer decides to do 2 or maybe 3 walls in that case.

Might help....