I have tried to further isolate my experience.
I have a simple solid with a half sphere and a ring below it.
I am pretty sure it is all solid, and these two parts are "Body1" and "Body2" in the subfolder of bodies in the main tree, but on exporting to .stl, I only get the ring component.
I would attach the .dwg here, but cannot work out how to specifically save the .dwg locally yet, its stuck in the cloud right now :-(
did a join between the two parts, and then the export to stl has the full component.
I am pretty sure this is a kludge, but at least I have a way forward...
We made changes to the access point due to a change in the dashboard. If you select the three bars on the left side you will see various options. One of the options is to Export Archive.
Obviously Fusion360 has changed a great deal since this thread was started but I still don't see how to export multiple COMPONENTS to a single STL file.
I've arranged 4-5 different components into one design (a subset of many other components on the screen) and assumed I could select them and right-click then export as STL. Not an option. I tried creating a SELECTION SET but this doesn't have a right-click, export option either... So, I tried creating a "RIGID GROUP" but when I do this it "explodes" my components back into the disorganzied mess they were before I used MOVE, POINT-TO-POINT, SNAP-TO to put them where I wanted them...
How do I group a set of components so I can export them as a single STL?