Good show.
I'm in the process of making my first globe knot mandrel, so wish me luck

FWIW, I wouldn't worry too much about legal trouble from building a globe around a 1/2 inch marble on a short loop. They weigh about 1/10 oz (Daisy slingshot ammo) and are about as lethal as bad breath sans slingshot. Now, if you build it around a 2-3 oz steel ball bearing on an 18 inch lanyard, you will probably be arrested for possession of a slungshot.
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Hope for the best and prepare for the worst.

The object in life is not to be on the side of the majority, but to escape finding oneself in the ranks of the insane