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Gear Up: A 15-Minute Intro on Involute Gears: ” data-medium-file=”https://t.co/iUlLHNcKjI” data-large-file=”https://t.co/AyAIgYtrFP” tabindex=”0″ role=”button” />If you’re into CNC machining, mechanical tinkering, or just love a good engineering… https://t.co/0fJ9YXQyfH #hadtips https://t.co/ZAuqNDzYEm

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