About this 3D model

These parts comprise the neck and lower jaw for the Elfdroid head. The neck runs on two 25kg.cm servos. In my model I used two SPRINGRC SR431 to rotate the neck and nod the head. I have included two different adaptors for the base of the neck. "neckbase-sr431-servohorn" fits directly ontop of the driveshaft of an SR431 (or 25kg.cm) servo. "Neckbase-circular-servohorn" is designed for a 21mm diameter circular servohorn to be screwed or glued inside of it. Both are simply methods of attaching the head to the neck, although I think screwing in a 21mm diameter circular servohorn is more secure.