Double Flip

(174)
Description This trick involves holding a stack of two coins between two fingers of either hand then alternating flipping the coins.
Start Start with a stack of two coins held edgewise between the thumb and the index finger of the right hand. The thumb should be above the index finger with the fingers pointing to the left. Now grab the stack with the thumb and the index finger of the left hand in a similiar manner with the thumb close to you and the index finger on the far side of the stack.
Directions
  1. Pull the left most coin to the left so that it rotates about its bottom edge 90º. The bottom edge remains in contact with the other coin during this motion.
  2. Continue the rotation while moving the bottom edge up to the top of the stack. The result effect is that the coin has been flipped 180º and we are back to the starting position.
  3. Now repeat the move with the right hand by pulling towards you on the coin.
Comments The coins can also be rotated in the opposite directions
Variations
Thumb Rotation
  1. Start as above. The right hand coin starts with heads facing right.
  2. Pull the right most coin out so it rotates 90º as in the above trick.
  3. Bring the right thumb over the far side of the coin and press the coin against the left thumb. Release the index finger so the coin is now held flatwise between the two thumbs.
  4. Rotate the right thumb around the left thumb so that the coin also slides around the thumb.
  5. When the coin gets to the top of the thumb slide it back into the stack in the original position but now the coin has heads facing left.
Make sure at least half of the tip of the left thumb extends out past the two coins. This makes room for the coin to be held against the thumb and rotated about it.

The trick looks best when its performed quickly and smoothly. Try and perform Step 2 and 3 in one motion.

For Step 5 you can also slide the coin to the back of the stack. Or at Step 5 slide the coin along the edge of the other coin, around the left index finger, replace the right thumb with the right index finger, slide the coin along the bottom edge of the other coin then onto the front of the stack.