An interesting question... Now retired, I had four significant jobs. Each had its pros and cons, so I can't pick a "best job."
From a young age, I'd been heavily into 1) electronics and 2) geography/maps. Throughout my life, these were factors in many of my pastimes and my career. (Maps are obviously not a really big career field.)
Job 1. In my junior year of college, I dropped out and "ran away to sea," to serve on nuclear attack submarines. I was a Fire Control Technician, working on the electromechanical analog/digital computer systems for targeting and weapons control.) So there was plenty of electronics involved, as well as the geospatial aspects of navigation, tracking, and tactics. I suppose an epitome of being immersed in one's job is deploying to spent 60 days at a time submerged on "special operations." Challenging and engrossing, these were the most interesting times of my career.
On the other hand, there were many months with our boat torn apart for overhaul, or routine training operations. All essential, but not like being on patrol.
Job 2. After 6 years, I returned to civilian life, where I installed and repaired mainframe computers for one of the big computer companies. Most of this was East Texas. I serviced a few customers. For the most part, I worked on my own, rarely seeing coworkers. My job title was "Field Engineer" but this was really a technician-level job. Challenging computer problems were very rare, most tasks were mechanical rather than electronic. My main tool was a vacuum cleaner! (Servicing the machines that read and sort checks was a mainstay of daily tasks.) When I had began in the industry, hardware costs were 90% of a system, software was 10%. By mid-80s, the ratio had reversed. I followed the money, getting my Computer Science degree in 1990. I'd prepared to work in business data processing, if I had to. But hoped for, and prepared to work in scientific computing of some sort. In this, I succeeded...
Job 3. Hired as a System Engineer for computerized mapping and geospatial information systems (GIS,) I became the implementation expert for one of our software products, working with a variety of customers (corporate, municipal, national, and international entities) in a variety of industries, as I assisted them in converting their data for use with our software. Given this mix of computers and mapping, I considered this my ideal job. I particularly liked the variety of customers, industries, locations and the custom processes needed for each project. Interesting trips to interesting places, doing interesting work. This was my "best job" until the company lost momentum, customers, and money. Time to move on...
Job 4. My final engineering position was again as a geospatial systems engineer, this time at an aerospace contractor, supporting projects for the U.S. Intelligence Community (IC). The government's contracting process is onerous, but classified work does have its perks. I retired from there in 2013.
So where did actual metalworking and machining ever interact with my life?
- I did take a metal shop class around 9th grade.
- My father managed an electronic components factory where I had a high school summer job. They had a small machine shop and some complex custom pieces of production machinery. I might have inventoried them.
- Another summer job was at a tool and die shop that also made cosmetic brushes! I operated a semi-automatic lathe that turned dowels into brush handles and a swaging machine that turned tubing in ferrules. This was in very uncomfortable conditions. After one week, I found a better job a block further down the road...
- .... where there was an electronics instrument plant. Given that I'd just come from the tool and die shop, they put me into their machine shop. My main job was trying to sharpen small drill bits faster than the women on the assembly lines could dull them drill circuit board holes. But I did used a mill for various custom tasks.
- So the next summer, got a job at an HP plant that made power supplies and other gear. They looked at my experience and sent me to the sheet metal shop. Mainly, I'd be shearing sheet sheet and stamping out panels. But let me tell a story...
- First morning on the job: sheet metal shop boss says, "We'll start you over here with Al, spot welding these chassis together. Here's how you do it..." He demonstrated the procedure then said, "Time for coffee break. When you return, start cranking them out."
- Back from break, I put on apron and safety glasses, turned on the cooling water and turned on the spot welder. Then grabbed two parts and the alignment fixture, stuck the work into the welder and stepped on the pedal. Immediately, every light in the factory went out. And stayed out. (Maybe I had the current set too high?) We found out the lights were out all over town, all over northern NJ. And still the lights stayed off. After an hour or two, we all were sent home, but told to come back if the power returned before mid afternoon.
- While our submarine was in the shipyard for 15 months, watched tons of steel being cut out, then later replaced, welded, and ground. They gave us dark glasses for eye protection. But nothing for hearing protection. I asked, but our corpsman told me, "You're not a sonarman, you don't need that." Well, he was wrong. My ears ring 24x7, and I get a check from the VA.
- On the sub, we all learn about all the systems on board. That's a lot of motors, pumps, valves, pipes, hydraulics, electrics, electronics, etc.
- The sub had a drill press and a lathe in the engine room. I never used them. I was impressed when my buddy, a Machinist's Mate, fabricated a replacement part for the Fairbanks-Morse diesel using hacksaw and file.
- I recall taking some parts from a check sorting machine to a local machine shop for repair, likewise two different parts from my sailboat.
Then what provoked me to set up my home machine shop? It was around 2009, a local newspaper here in San Diego North County did a story about the Miniature Engineering Museum of Craftsmanship sponsored by local firm Sherline Products. I visited the museum in San Marcos, CA (now in Carlsbad, CA.) Seeing their displays reminded of my history of machinery stuff and I began building my shop and my skills.