videos in AudioSet
A list of about a million ten-second YouTube clips, each labelled with the sounds in it, that Google published in 2017. Labs use it to train and test general audio and music models.
Including Glacern Machine Tools - CNC Milling Products Showcase 2009, Crash Course in Milling: Chapter 7 - Face Milling, by Glacern Machine Tools, Crash Course in Milling: Chapter 8 - Choosing & Using Endmills, by Glacern Machine Tools