My dad had a 4 bay repair shop with a machine shop out back. I used to wait for the school bus there for a decade and turned valves on a lathe before school, or replaced brushes on parts that we not throw-away ! I always had oil stains ... He ran that place from 1950 to 1980. I wish I had learned more from him when I was younger, before life got in the way, as his fund of knowledge and hands-on experience was impressive. Came back to cars after his death.
The virtual conversations and tips provided by folks like yourselves do more than you know, and the those sweet memories come back strong. I'm sure I'm not alone ..... thank you.