Rotate around pivot, in obj file

I need rotate “wing” around of specific pivot point, as pivot i am using a second “mesh” pivot is son of father (antena body) and wing is son of pivot, so, why both child have same pivot (wing is supposed to rotate using the “pivot” pivot)

I suppose it is not necessary to use a mesh for the pivot, but how do I do it then?

(with GKB works fine, but unfortunately i can not use GLB files)

here is the PLayground with model loaded:

You don’t need pivot for that.
With an origin (0,0,0) at the base of the antenna, then parent the antenna to the body and set a local rotation + translation to the antenna.

see the gizmo here:

recenter the mesh so the antena rotation axis passes through the origin.

2 Likes

Thanks, solved :