Topsy Turvy

thingiverse

This large spinning top contains a hidden mechanism which, when activated while the top is spinning, causes its six petals to open up releasing the mini-top hiding inside. With practice and patience it is possible to carefully activate the release mechanism while Topsy Turvy is spinning fast and flipped upside down in such a manner that the mini-top keeps on spinning even after the main body has come to a stop, as seen in the following video.