[sodizzle]

I used a cnc for this, but its pretty simple. Its a 1.5" cube that has a triangle circle and square (shapes sound familiar?) Cut out of each side about .5" deep. That way, after the last shape is cut out, the center peice is seperated but cannot be removed from the outer part of the block. I think its pretty neat, but it would be hard to make anything but the square without a cnc.