An experiment that had to be done -- how far will a chuck key fly if left in the metal lathe chuck. Reminds me of my unsuccessful experiment of getting a shirt sucked into the table saw. https://www.youtube.com/watch?v=UeQzIzj3j_Q More about the metal lathe: https://www.youtube.com/watch?v=oxQTtV91KIw Leaving the chuck key makes for more viewer enagement: https://www.youtube.com/watch?v=goD9NTTflpI