WD40.. Where'd the name come from?
WD-40 was created in 1953 by three technicians at the San Diego Rocket Chemical Company. Its name comes from the project that was to find a “water displacement” compound. They were successful with the fortieth formulation, thus WD-40. The Corvair Company bought it in bulk to protect their atlas missile parts.
Usually such explanations are simply attempts to make some sense of the seemingly nonsensical, but occasionally they’re on the mark. Consider WD-40, the ubiquitous lubricant (or, as its manufacturer describes it, the “multi-purpose problem solver”) found on nearly every workbench and in every toolbox in America. Why “WD-40”? Because, as the WD-40 Company (formerly the Rocket Chemical Company of San Diego) explained: WD-40 literally stands for Water Displacement, 40th attempt. That’s the name straight out of the lab book used by the chemist who developed WD-40 back in 1953. The chemist, Norm Larsen, was attempting to concoct a formula to prevent corrosion — a task which is done by displacing water. Norm’s persistence paid off when he perfected the formula on his 40th try.

WD-40 was created in 1953 by three technicians at the San Diego Rocket Chemical Company. Its name comes from the project that was to find a “water displacement” compound. They were successful with the fortieth formulation, thus WD-40. The Corvair Company bought it in bulk to protect their atlas missile parts.
Usually such explanations are simply attempts to make some sense of the seemingly nonsensical, but occasionally they’re on the mark. Consider WD-40, the ubiquitous lubricant (or, as its manufacturer describes it, the “multi-purpose problem solver”) found on nearly every workbench and in every toolbox in America. Why “WD-40”? Because, as the WD-40 Company (formerly the Rocket Chemical Company of San Diego) explained: WD-40 literally stands for Water Displacement, 40th attempt. That’s the name straight out of the lab book used by the chemist who developed WD-40 back in 1953. The chemist, Norm Larsen, was attempting to concoct a formula to prevent corrosion — a task which is done by displacing water. Norm’s persistence paid off when he perfected the formula on his 40th try.
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