Do a search for nichrome wire. The porclean insulators are nothing more than the white porclean electric fence insulators you can find at your local feed store. A box of 6 or 12 is only a few bucks. When using the nichrome wire, just remember that the longer the wire, the more resistance it has, but when wrapping it around the insulators, if it touches itself, it will loose its resistance values and can over heat. A reading of about 60ohms resistance will result in about 250 watts of heat when used with a 110V electric current. The more resistance or higher the Ohms, the lower the amount of heat. To increase the resistance of the wire, or raise the Ohm reading, you must use a longer piece of wire. Shorter wires have less resistance and a higher heat.