How Do You Make A Super Power Electromagnet?
Building a super-power electromagnet is really no different than building a simple nail-and-copper-wire kind. The difference is that you want a better core, more power and more dense windings. To that end, this project uses a ferrite rod instead of an iron nail, a power supply instead of a battery, and a double winding of wire. Get a magnetic core. A large iron nail or a railroad spike will do, but a soft ferrite rod will work better. If you are using a nail, make sure it is at least 6″ long. With ferrite, buy the longest core you can afford. Strip the coating from one end of a length of 22-gauge, single-strand, insulated copper wire. Strip away about 1″. Leaving at least 4″ of wire to work with, attach one end of the wire to one end of your magnetic core. Duct tape, a drop of hot glue, or any other general-purpose adhesive you happen to have around should do the trick. Wrap the wire from one end all the way to the other. Wrap it around and around the core as tightly as you can, withou
