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Hardware Engineering,
Explained.

Practical notes on mechanical engineering, DFM, prototyping, manufacturing, and CAD design — written for founders and engineering teams building physical products.

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Product Development
Most Hardware Requirements Aren't Requirements — Here's How to Write Ones You Can Test
Waterproof." "Feels premium." "Fast enough." These sound like requirements, but none of them are testable — and an untestable requirement is one your engineering team can't design to. Here's how to fix it.
Viktor · Jun 29, 2026