a general comment on this entire thread:
while not new to engineering, i am new to eagle and even newer to F360
making symbols is easy enough, either from scratch or by modifying.
in F360 electronic, footprints come from the 3D package from the package generator - which turns our to be fairly easy, once one relates the package generator geometry to the actual part geometry
except for things that don't match the items in the package generator and when one want only a footprint and not a 3D model (such as plated through holes, as in thread "pin hole without a device attached")
i want to know how to build a 3D model in F360, with all of the fancy sketch, bodies, components, etc functionality of F360, then use it as the 3D model for some device in F360 electronics
and, in line with the thread noted above, how can i build a footprint without a 3D package?