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 Bolton Tools -ZX45 - Milling Machine, Bolton Tools - BT1022 - 10" x 22" Bench Metal Lathe, Bolton Tools - B250V - 10" x 22" High Precision Gear Head Metal Lathe Model