I'd like to instruct you how to do the trick at the end of this video, which forms an eiffel tower thing in a moment.
But it may hard to watch it in this video so I made another one.
Click the link below.
YoYo used : eetsit by Anti-Yo
-string : 50/50 slick 6 yellow
-response : 1 thin/large iPad
-bearing : un-washed konkave bearing
Music : kokoni iruyo (I'm here) by Hotpants