My first attempt at something like this. 

Not that difficult but quite time consuming. 

Made from Hard Maple and African Mahogany

If you look at the 4 corners these blocks are square. 

Crossing the board from one corner to the opposite corner all blocks are square.

1 - Available

16-1/2" x 16-1/2" x 1-1/4"

$325  Order through email!