link textSo I made a simple space ship. I worked on the left wing first, and when it came time to make the right wing I simply selected the left wing, hit duplicate, and rotated it by 180 degrees to flip it. I positioned everything, selected all my disparate objects, and hit “join”. Everything looked fine so I exported the FBX but when I bring it into UE4 I notice that the right wing doesn’t show up. I thought this was odd so I zoomed around the model in UE4 and it turned out that when I viewed the model from below rather than above, I could see the wing. So I thought maybe I wasn’t supposed to rotate it in blender. Went back and instead of rotating it, I just used a negative scale value. Redid everything and same problem when I brought it into UE4.
So then I thought maybe I’m still doing it wrong. So this time I selected the left wing and added a mirror modifier. Joined it all together, imported it again, and same problem.
So I guess I have 2 questions: One is why is my mirrored/flipped/scaled wing not displaying properly even though everything is joined together, and two, do I actually have to (and should I) join my objects together in blender if they form a single overall model?
Thanks.
Edit: attached a of the blender file. One has everything merged, the other is pre-merge.