I have tried vaseline, which did work okay. It made the track smoother and less 'sticky', but not neccessarily fast.
I also tried silicone spray, which was a disaster! It ruined my cowboy's cube. It never dried, and was all greasy and just as sticky as before I applied it. And it ruined the stickers!
What do you use? I want something for speed cubing, and that won't ruin my stickers.
(My youtube solve http://www.youtube.com/watch?v=gsfyew4XbDo) I'm using vaseline here, it looks really fast but that's thanks to my crappy camera.
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