I’m not sure when I got the urge to make a CNC… or maybe it was always there. I did a summer job in a machine shop when I was 19, where I was given a minimum of training by the 88 year old machinist: “keep the pink things [wiggling his fingers] away from the sharp things [pointing to the milling machine’s cutting edge], boy.”
(I’m not joking. He did show me more things later, but only because I asked. He would mostly just motion for me to come over so he could tell me filthy jokes from the silent film era and cackle to himself.)