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simple machine to provide/create movement? Answered

want to use/alter or create a machine which will produce simple repetitive movement (for instance, to power the arm of a dummy (to shake it) or to move a dummy's head back -n- forth) for halloween.? help will be much appreciated! have no idea how to go about this & not a lot of skill (but probably have the necessary equipment)

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Re-design (author)2009-09-02
orksecurity (author)2009-09-01

Some good ideas already posted on instructables, if I remember correctly. A particularly elegant set of designs has appeared at http://www.phantasmechanics.com/

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