Yet another, and the in my opinion hardest to grasp, fundamental. The pen makes rotations between the fingertips of 2 and 3 (in it’s normal mode, ofcourse you can also make it rotate between any other 2 fingers…). The pen is constantly between these two fingers, it just makes rotations by moving mostly the bottom finger, but also the top finger a bit , back and forth. This trick is actually performed like a Sonic except you don’t bend 2 down.
Step 1: Hold the pen as if you were going to perform a Sonic, between 2 and 3 (and with the rear stuck behindyour thumb if you still haven’t really grasped the trick), but keep your fingers a little bent.
Step 2: Strech out your fingers and bend 3 backwards a little. The tip that was down when you started should now start making a movement upwards.
Step 3: Let the pen continue it’s rotation untill the side that was down in the beginning is on top, and then…
Step 4: …bend 3 a little forward instead and 2 backward, and let the pen make a rotation towards the thumb.
Step 5: Catch the pen with your thumb or keep doing steps 2-4 over and over again to get a continuous movement.