I'll have to give brushing it on a try on something later. I've just kind of put it up on the fireplace until I figured out a good way to do it. I have not heard of any way of doing it with magnet's. The way I tried was just to soak some paper towels in acetone and he had set it on the brim of the Tupperware container. I may have just not used enough acetone and paper towel's, its a pretty large container.