Along the same lines (machining), Clickspring is my favorite: https://www.youtube.com/channel/UCworsKCR-Sx6R6-BnIjS2MA (channel link)

Edit: Here is a particular video I liked: https://www.youtube.com/watch?v=q6xovvpuMQo&list=PLZioPDnFPN...

Already subbed! We really might be the same person.