adywan said:
So the ball droid (BB-8) isn't CG, but a real prop , as confirmed by Mark Hamill. In bet the whiners on the net that were saying the ball droid was "bad Cg" are going to be a little butthurt about this one ;)
https://www.yahoo.com/movies/mark-hamill-on-playing-with-the-star-wars-the-105015597302.html
Perhaps we have all lowered our expectations a tad as to how these things are done. ;)