I've had some bad trouble trying to create an electromagnet, so I've come here in hopes of help. Basically, I need to create an electromagnet strong enough to lift 2kg of weight. Because I don't know much on the subject, I have attempted this by wrapping insulated copper wire about an iron weight. I then connect it to a 6V battery. However, it only works some of the time, and rather halfheartedly, too, as it only slightly pulls on the paper clip I test it with. So, I have to ask, does anyone have any recommendations? I have had some thoughts but nothing I test works. I'm thinking that maybe the iron weight may not be pure enough? For mathematical purposes, the wiring is 12 gauge, ten foot, insulated copper wiring, and I also do have access to higher voltages, but in my experience those can get dangerously hot. Thanks for any help you can give me.