Tony Fisher's Inverted 13x13x13 Ball in a Cube

[Tony Fisher]

I made this as a by product of making the 13x13x13 Ball in a cube.

 

[CubesNDominoes]

I have to say, I don't like this as much as the normal ball in a cube, but it still looks really interesting, it looks almost like a 3x3 core

 

[mjm]

That's crazy! Looks good, though.
I was worried you weren't going to do anything with the "leftovers".

 

[pjk]

Beautiful puzzles!

 

[stoic]

Twisted (and twisty) genius.