How to Make a Pulsing Motor

Cut off the base of one servo head with a hacksaw. Insert the screw into one of the uncut servo heads and make sure the base of the servo is facing the head of the screw.

Attach the cut servo base onto the threads of the screw. Thread the servo base onto the screw by turning it counterclockwise. Attach the remaining servo head to the screw and make sure the base is facing the tip of the screw.

Insert 10 inches of the wire into a hole in the center servo on the screw. Run the wire down through the servo at the tip of the screw. Wrap the wire around the threads of the screw.

Insert the head of the screw into the chuck of the power drill. Press the trigger on the drill and wind the wire around the center hub to a thickness of half an inch. Trim any excess wire by cutting it using a pair of wire cutters.

Apply a small amount of glue to the coil of copper wire. Allow two hours for the glue to dry.

Unwind the copper wire around the threads of the screw. Press your fingers onto a servo on each end of the screw. Set the power drill to reverse and remove the screw from the servos.

Apply additional glue to the coil of copper wire and let dry. Make sure not to get any glue on the center servo.

Remove the center servo from the coil of copper wire. Trim the excess wire from the coil with the wire cutters. Place the coil of wire into the cyanoacrylate to soak and set it aside to dry. This will be your actuator.

Glue a pin onto a small rare earth magnet. Insert the pin into a block of Balsa wood. Glue the servos onto a piece of wood. Position the rare earth magnet above the coil of copper wire.

Attach an electrical wire to the servos and to a battery box. Insert a battery into the battery box and you will see an example of linear motion.