In cost engineering - especially within the electronics industry, as in my own work - it’s easy to think that mastery lives in spreadsheets, cost models, and perfectly formatted should-cost reports. Those tools matter, but they aren’t where deep understanding is forged. The most effective cost engineers I’ve known pair strong analytical skills with real-world experience. My own most valuable insights didn’t come from a cost model; they came from hands-on work: touching parts, building circuits, breaking things, fixing them, and seeing firsthand how manufacturing and assembly actually behave when theory meets reality.

My own path into electronics didn’t begin with a formal cost model. It began on a workbench.

As a teenager, I built Heathkit electronic kits that I bought using my newspaper route money. Indeed, my first ham radio transceiver and several test instruments (oscilloscope, digital multimeter, etc.) were Heathkits that I built myself. For anyone who grew up in that era, Heathkit was more than a brand; it was an education. You didn’t just buy a radio or test instrument; you assembled it piece by piece. You learned how to read schematics, identify components, route wires, and follow assembly sequences. You learned how the various circuits worked together. You learned patience. You learned that a single missed solder joint could turn a perfectly designed product into a non-functional one. You learned the pain of getting careless when you accidentally touched the business end of a hot soldering iron. Most importantly, you experienced the joy of seeing your project come to life when you plugged it in and turned it on for the first time!

That experience quietly taught me something fundamental that still applies to cost engineering today: every line item on a bill of materials represents real human effort. Every resistor, transformer, chassis screw, and wire harness has handling time, insertion time, inspection risk, and rework cost attached to it - whether the spreadsheet acknowledges it or not.

Engineering Degrees Are Math Degrees.

That’s Not a Criticism Most engineering degrees, especially in electrical and mechanical disciplines, are primarily math degrees. They emphasize calculus, differential equations, linear algebra, signals, systems, and theoretical modeling. This rigor is essential in that it teaches engineers how to think, analyze, and solve complex problems.

What these programs often don’t provide is deep exposure to how things are actually built on a factory floor. You don’t gain the practical insight that real-world experience provides.

Very few engineering programs teach how long it takes to solder a connector correctly, why an operator might struggle with a dense PCB layout, how fixture design affects yield, or why a theoretically simple assembly becomes expensive in practice. Those gaps are not a failure of universities, as they reflect different objectives. Universities teach theory. Factories teach reality.

For cost engineers, bridging that gap is critical. One of the most effective ways to do that is by taking a few targeted courses at a local technical college, such as classes in electronics, automotive/small engine repair, machining, tooling, welding, or industrial maintenance. These courses expose you to processes, constraints, and failure modes that rarely appear in textbooks but dominate real-world costs and the associated trade-offs.

Understanding manufacturing at this level changes how you evaluate designs, supplier quotes, and should-cost assumptions. You stop treating labor as an abstract rate and start seeing it as a sequence of physical actions performed by real people using real tools in real situations. Learning to Solder Changes How You See Cost Learning to solder was another formative lesson. On paper, soldering looks trivial: one joint, a few seconds of labor, a few seconds in a reflow oven. In reality, it’s an art. Joint quality depends on temperature control, component lead finish, board cleanliness, operator experience, solder metallurgy, and ergonomics. Cold joints, lifted components, bridged leads, and rework cycles don’t show up in theoretical cycle times, but they absolutely show up in factory yield and cost. That understanding becomes critical when evaluating manufacturing assumptions. When a supplier claims an aggressive labor rate or an abnormal first-pass yield on a dense PCB, someone who has actually soldered fine-pitch components knows when to ask harder questions. You don’t need to accuse anyone of misrepresentation - you simply recognize when assumptions don’t align with physical reality.

Designing and Building Radios: Where Cost Meets Design Intent

My ham radio hobby took things further. I wasn’t just assembling kits; I was designing and building my own radios. That meant making trade-ffs: component availability versus performance, layout simplicity versus noise immunity, and the target cost of a design that was limited by my paper route income. It meant discovering firsthand how a small design change could dramatically affect build time and the project’s overall success.

From a cost engineering perspective, this is invaluable. You learn that cost is not just a function of component price. It’s driven by design intent. A clever circuit that looks elegant on paper may be a nightmare to assemble. Conversely, a slightly higher-cost component can eliminate adjustment steps, reduce test time, and improve yield, thereby lowering total cost.

Rebuilding Old Equipment Teaches Manufacturing History and Its Costs

Rebuilding old test equipment and radios reinforced this lesson even more. When you tear down legacy equipment, you see the fingerprints of the original manufacturing strategy. You see where designers optimized for the tools and labor they had available during their time - and where they didn’t. You see hand-wired assemblies that made sense before automation, and early attempts at modularity that reduced service cost but increased material cost. Some of the most amazing electronic designs that I have seen were based upon vacuum tube technology!

For a cost engineer, this kind of exposure builds intuition that no training course can replicate. You start to recognize why certain assemblies cost more than expected. You understand why some technologies scale well in high volume, and others don’t.

Cost Engineers Make Better Decisions When They’ve Actually Done the Work

This is why “getting your hands dirty” matters so much in cost engineering. Factory tours are useful, and data sheets are necessary. However, nothing replaces direct experience: hands-on building, soldering, assembling, troubleshooting, and repairing. These experiences anchor your cost models in reality.

Hands-on experience also builds credibility. When you sit across from a manufacturing engineer or supplier and discuss process assumptions, the conversation changes when they know you’ve done the work yourself. You ask better questions. You challenge assumptions respectfully. And you earn trust because your insights are grounded in experience, not just analysis.

Ultimately, cost engineering is about decisions: design decisions, sourcing decisions, and manufacturing decisions. Those decisions are stronger when informed by real-world insight and a deep understanding of how products are designed and made.

So yes. Master the math and learn the cost models, but also get your hands dirty! Take a class at a technical college. Build something. Tear it apart. Break it and then fix it. That’s where real cost insight begins!

Jeff Miller Jeff Miller is President and Co-Founder of SPCEA and has 40 years of engineering, manufacturing, and commercial experience within the electronics and semiconductor industries. He has served in leadership and direct-contributor roles at General Motors, John Deere, Standard Motor Products, Ford Motor Company, Whirlpool Corporation, and Panasonic Automotive Systems. Jeff has been active within the cost engineering profession since 2002.