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Lovely stuff.
https://www.youtube.com/watch?v=UoOyr11tUnw
Jeezer balances a spinning top on the edge of a samurai sword at the end of this one.
 (clunk, Mon 11 Sep 2017, 23:34, , Reply)
This is a normal post I saw that one too. Balancing them was interesting to see.
I got a rough idea of how he marked the spindle to find the off-balance, but couldn't work out how he then fine tuned it.
 (I helped save b3ta! Varmint, Mon 11 Sep 2017, 23:36, , Reply)
This is a normal post
By how deep he set the metal slug into the body?
 (clunk, Mon 11 Sep 2017, 23:48, , Reply)
This is a normal post That was one part of it
but he was making marks on the spinning shaft to note roughly the imbalance, but then somehow he was tuning it more finely. I suppose it boils down to skill and experience.
 (I helped save b3ta! Varmint, Tue 12 Sep 2017, 9:44, , Reply)