Create a hole in body of Revolve

[headtotoestrength]

Hi,

I'm fairly new to 3d design and 3d printing.  I'm trying to create a hole in this object that I made the body with Revolve.  When I import it in to Bambu Studio it says it has non-manifold edges.  After slicing it, the hole closes up.  Any suggestions?  I've tried a few different things like trying to combine both the bodies to a single body but could not do so.  I've made the hole with the hole feature as well as doing just an extrude but the same thing happens when I go to slice in Bambu.

[TheCADWhisperer]

@headtotoestrength 

There are two different Revolve commands.

One in surfaces.

And another one in Solids.

You probably intended Solids.

Click on image above to enlarge the view.

Surface bodies are infinitely thin and have no volume.