Wrap the wire, leaving about 10 inches of wire loose at the top end of the nail, and coiling the rest of the wire down to the bottom of the nail. Do not overlap the wire. Make sure you leave about 10 inches of wire on the bottom end. If needed, cut the wire, so that there is about another 10 inches of loose wire at the other end, too.
Strip about 1 inch of the plastic coating from both ends of the wire. Use the wire cutter to remove the coating. Be careful when stripping the wires to avoid the wire springing and cutting your skin.
Attach the wire on the top to one end of a battery and the bottom wire to the other end of the battery. Now the nail turns into a magnet. As long as there is continuous current from the battery flowing through the wire, the magnet will work.
Pick up the washer using the magnet to make sure the electromagnet is working. If the electromagnet is working, try picking up a larger amount of washers. If the electromagnet is not working, make sure t you're making good contact with each end on the battery with the wires. Using two small pieces of duct tape, tape the wire ends that are touching the battery to each end of the battery. This will help make better contact. Make sure the battery you use is fully charged.