Mechanical Advantage Demonstration Crane

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A versatile variable geometry crane designed to illustrate mechanical advantage in a practical way to kids. Video footage of the crane in action can be seen here, showcasing its capabilities and versatility. This crane must only be used under adult supervision to prevent potential harm or injury. Two interchangeable winch handles are included, allowing users to experience firsthand the impact of varying diameters on turning moments. The gantry pin, through which the string passes, can be adjusted to three different heights or omitted altogether to demonstrate how the crane's geometry affects its mechanical advantage. To ensure stability and prevent damage, the crane must be securely fastened to a wooden base. It has been tested with loads up to 1 kg and should only be used with strings that can support at least this weight. The hook is designed to be printed on its side to minimize print grain effects that could weaken it over time. A ratchet mechanism is incorporated into the winch to prevent unwinding, also providing a working example of a mechanical component. This feature must be used under adult supervision due to potential risks to fingers. When constructing the crane, it's essential to hammer the Gantry & Pivot into place within the Platform while protecting the 3D printed components with wooden blocks and striking them instead. Before using the crane, conduct a proof test to ensure its safety and functionality. This design is provided as is, and no responsibility is accepted for any damage or injury resulting from its use. Users are advised to exercise common sense to avoid accidents and never place their bodies under unsupported loads.