Agreed. This modeling video tutorial is very well done, a rarity. It's author and our own Paul Budzik are in a minority in setting a high standard for YouTube production quality. There are more out there, but not a lot.
At 3:20, the YouTuberer is using some sort of cutting gizmo. He was kind enough to post a subtitle naming it. WonderCutter from MicroMark. Over $400. I remember a day I would have ordered one by now. Those days have passed.
Thanks for posting, I look forward to watching in it's entirely later.