I don't mean to burst your bubble any further, but I'm not sure that counts as a yo-yo. I would think rising back up is a crucial element to the definition of a yo-yo.
And don't get me wrong, it's a fine looking Yo-Yo prototype, but was building it from scratch really necessary? Couldn't you have just strung up one of those over-sized industrial spools to the same effect? There's no way that wouldn't have been the biggest Yo-Yo.
Would have saved a lot of time too, could have gotten a job months ago, instead of collecting unemployment and spending a year and a half slapping two pieces of round wood together with rope wrapped through the middle. Must be a former union worker, working at that pace.
