Inspired by Tony Fisher's 7x7x7 sculpture, I am halfway into my mirror blocks sculpture.
It is basically the same idea but on the mirror blocks cube, the size of the cubies are different,
which creates different sizes of curves and different angles.

I'll order some Milliput today to fill it up.

Pics:

Very cool idea. I wonder why no one else has thought of that. I can't wait to see the final results.

At least somebody thought about implementing it for a 3x3x3:
http://twistypuzzles.com/cgi-bin/puzzle.cgi?pkey=2043