title: Will three.js Object3D.clone() create a deep copy of the geometry?
body: <p>I'm loading models using the collada loader. The loader returns an Object3D, "dae", with many child meshes. I'd like to instantiate the parent "dae" object many times without duplicating the meshes. Can I just use dae.clone()?</p>
  
  <p>Put another way: I'd like to make shallow copies that all have their own transformation matrix but share the same geometry. What's the most efficient way to do this?</p>