Hungry Hungry Turtle

Here are the list of changes:
- This is down scaled to 50% of the original design to fit in the palm of your hand.
- Added Screws and nuts to secure the shell instead of pegs.
- Added Screws and nuts to hold the rubber bands. The bars in the original design kept breaking.
- Added a slice to increase the spacing between the top and bottom parts to allow the gear to move freely.