I spent 25 years in the trade, mostly in job shops, a bit in manufacturing and a brief stint in a testing laboratory. Right now, I'm semi retired and hobby mining for gold.
The current focus at home is to bring the mostly junkyard shop up to some level of usefulness. All the machines are relics that came as basket cases.
When I get myself fully retired to tinkering, I aspire to build a long case clock, and a small condensing steam engine (5 HP or so).
Meanwhile, it's fun in the shop.