sliding apart... 
  here is the heart of the brain...attack  
  this is the star version of the brain attack although the star gives you a clue to the solution a lot of people did 2 hours to make it.  
  sliding apart..more information here. 
  the brain attack in natural wenge and zebrawood 
  the brain attack in zebrawood body and maplewood star  
  Black walnut body maplewood star  
  the brain attack in sugar maple and palisander wood star 
  here sliding apart  
  this is amazuke wood for the body and cocobolo for the star 
  sliding apart.
  bubinga rosewood body and cocobolo star.