I think the magnets on the track piece may be arranged NSN like this: NNNNNNNNNN SSSSSSSSSS ==> NNNNNNNNNN Which allows movement as indicated. In the p

I think the magnets on the track piece may be arranged NSN like this: NNNNNNNNNN SSSSSSSSSS ==> NNNNNNNNNN Which allows movement as indicated. In the part of the video where it's just locked stationary above a square magnet, it appears maybe the magnet as this arrangment: NNN NS NSN or SN NNN Which locks it entirely in-place, not allowing movement. And then in the part where it's spinning, I think maybe the magnet is S on the inside and N on the outside or something: NN NSSN NS SN NSSN NN Allowing it to spin. But this is speculation based on my limited understanding (but I noticed no one else was answering, so I thought I'd give a shot).