Here’s one link from the sticky threads here: How to tune a yo-yo with a set screw axle
Here’s Brandon Vu’s video:
Also remember this: some yoyos simply cannot be tuned. There’s no guaranteed way to take a potentially out of round half and put it alongside a perfectly round half and have the end result be smooth.
The tips boil down to more or less this:
(Brandon Vu’s video shows these–)
- Try flipping your bearing
- Try a new bearing
- Try flipping your axle
- Try a new axle
(the stickied link shows this–)
5. If the axle is “floating” (shorter than the combined threading of both halves), use loctite or teflon tape to vary the depth the axle is into the halves
There’s not much else you can do. There’s one more extreme technique that I wouldn’t recommend to anyone at all, ever. But brave souls have done it:
6. If the half is out of round and you can tell where/how, use an appropriate implement to literally tap it and re-form it back to round.
But really. Don’t do #6 except as a joke if you’re ready to throw the yoyo in the garbage (literally).
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