Elfdroid Head & Lower Jaw
thingiverse
This 3D printed head contains servo-driven mechanisms to move the eyes left and right (but not up and down) and the lower jaw opens and closes. The neck mechanism enables the head to rotate and nod up and down (but not tilt sideways). Uses 2x SPRINGRC SR431 servos to drive the neck and 2x SPRINGRC SR311 servos for the eyes and jaw. (You should be fine as long as you get two 25kg.cm servos for the neck and two 15kg.cm servos for the eyes and jaw. Your servos don't have to be SPRINGRC, they can be whatever brand you like. You'll also need 5 standard cupboard door magnets to hold her detachable faceplate and forehead on.
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