I learned something the other day about balancing from a very unexpected source. I was laughing during a lot of the video, but there was also the lesson in the difference between static balancing and dynamic balancing. Just goes to show ya that ya can learn something, even when you're not expecting to!
The video is a bit long (over 20 minutes), and the lesson is just after the 14-minute mark. He then explains the difference between the two balancings. Before that, though, he spends an awful lot of time and energy turning, drilling, and milling a metal slab to mount on a lawn mower. (Yep, you read that right, a lawn mower!

I think I'm in the wrong business for making money.)