Another developer Shane at Cogmation showed me this today, and it’s worth mentioning as it may come in handy, if at a cost. To flip an imported 3D mesh along any axis, just change the scale to a negative value.

Sometimes it’s the simplest things that make you slap your forehead.

I realize all the 3D people are shaking their heads at me right now, but yeah, it’s coming back to me, that’s pretty standard  for 3D apps. But it’s also this quick and dirty way of mirroring meshes that causes a lot of problems if the mesh has to be used anywhere else but it’s native environment. It seems I’m always flipping normals because of this. Unity especially does not like this at times – with colliders behaving inversely to their meshes.  And I don’t think I’ve come across a Blender model yet that isn’t bonked because of this.