I've been in metal working ever since I can remember. My Dad was a tool-n-die maker by trade. So I learned a lot from him. I majored in Machine Shop back in high school. Went to work in the machine tool industry for 30 years. Left at 50 with a heart attack. Been retired since I was 50. Worked for Gleason Works in Rochester, NY. In case you don't know the company is/was a major machine company producing gear cutting, gear grinding, gear lapping and curvic coupling grinders. Anything that has gears in it were probably cut on a Gleason machine. I carried that interest into model railroading with the machine tools.
A few years ago I finally decided I needed to stick with one hobby. I wasn't getting anything done with all my interests. I was into HO scale from the start but wandered into the Narrow Gauge. Worked with On30 when the first Shay came out. Also got in to TT scale (1/10"=1') for a while.
So ya there are now two machinists on the forum. Lets see if we can collect a few more.
I don't have that history. My interest was sparked in high school shop class. I decided I didn't want to be a pro, but I did want my own shop. That would have been 1964-65.
I finally was able to assemble my shop in 2017. I had collected a few hand tools over the years, and I did some scratch building (many years ago) in 1/4" scale using hand tools. The Mel Thornburgh methods.