The Wall Thickness does not translate properly in Cura. I believe Cura has the wall thickness based on my Nozzle 0.4mm and originally wall line count was set to 3, I changed it to 4 and it might have given me an extra .4mm wall but when I measured it, it still comes out as 1.65mm. Setting the wall line count must mean the Nozzle size times the wall line count. If I set wall line count to 8 or 10 I still only measure 1.65mm.
Here is a link to my part in OnShape, could it be something related to my design not being a sphere for example?
Link to Part:
https://cad.onshape.com/documents/ddf9ac0f34666762eeca2ca1/w/0969f75a8bef66ed00cd4316/e/81d195ea90abe910a7021d6c