Is there any way to create a new box, which would be hollow inside?
I have aligning up planes and I can't really edit them all at the same time.
I've seen some people do this, but could someone tell me how to do it, too?
What kind of effect are you after with this hollow box?
Perhaps to make the inside of a room?
Quickest way to make a hollow box would be to make a standard box, turn it to editable poly, go to poly subobject mode, select all, invert normals.
Place camera inside and thats it.
Added advantage will be that with back face cull switched on in Max, you can look at it from outside an always see the contents!
You can also copy, scale up all faces and switch their normals back the way they were to stop being able to see into the box if desired, or just switch off back face cull.
3D animator and VFX specialist