[jimbokun]

I liked the video focused on his hands, where his gestures and expressing the rough size and orientation of things added to his verbal description. Not sure if this is a common technique, but works very well for this topic.

[Gracana]

This Old Tony (a hobby machinist / welder on youtube) has made all of his videos in that format. It works very well!

https://www.youtube.com/c/thisoldtony/videos