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Precision Engineering Disguised as a Paint Pen
Most people grab a Sharpie and call it a day. But militaries, aerospace companies, and construction crews need marks that survive conditions that would destroy consumer markers in hours — jet exhaust, salt spray, welding heat, chemical solvents. This episode explores the specialized chemistry and engineering behind industrial markers, from epoxy markers that covalently bond to oily steel to wax-resin sticks that have marked hot steel at 650°C for seventy years. We cover the major companies (LA-CO Industries, Markal, Dykem), the regulatory shifts driving innovation, and what happens when…
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