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This guide describes attaching materials rigidly to servo horns.

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This guide describes joints. A joint connects two links so that they rotate.

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This guide describes the linkage built on a stand.  It uses a joint and a slot to guide the motion.

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This guide describes the cable drive mechanism. This mechanism uses a string through straw guides to bend a piece of cardboard.

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Video instructions to build various mechanisms including cable drive, piston (linkage), winch and bracket.

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