I learned how to do a baseball stitch when taking an Aircraft Covering class. We had to replace and stitch the fabric on the tail section of a small Airplane. Each of us was given a section to cover. Some of those folks just could not make that stitch, mostly women, they had trouble changing to the other needle for the next stitch. They got so frustrated they were ready to kill any one that even looked at them as they sewed. I also used that stitch when replacing caps on saddlehorns. I like watching experts doing what they do best. Those guys were really going. They could do in five minutes what it would take me 30 to 45 minutes to do. I doubt mine would look that pretty either.
I've taken a few baseballs apart and always wondered how they got all that yarn wound around that ball so smoothly. We tried putting one back togeather, no way. We could never get the windings right by hand. Decided it was easier to go buy another ball.
That machine was as interesting as the machine used to put the wire windings on an electric motor armature.