It is labelled to have 25N hold but I can't seem to even get a tenth of that, I know it is working because I tested it with a little screw, it seemed to hold it in place, but when I try to attract the screw from about a cm away it the effect isn't present. I know the relationship between distance and power, it is the inverse square law. But it should still attract, that's why I've concluded that the Electromagnet isn't being used to its full potential. Can anyone help? Thanks! I'll still keep looking.
