I am wondering if there is a way to delete un-seen mesh with Blender. Here's an example. I have a cube, and it has 3 cubes inside of that cube.
Is there a way to delete the mesh inside of the cube without selecting the cubes manually? This would clear up lots of extra mesh and speed up my render engine. I am using Cycles, so if Cycles has an option to not render hidden meshes, that would be good too. (although deleting them would be better). A Python script would also do. :)