So the other day I posted about designing an electromagnetic toy for my physics class project (https://www.physicsforums.com/showthread.php?t=726492). Unfortunately, where I live, finding disc magnets with conductive plating, is like really finding that needle in a very very big hay stack. With that being said, I decided to brain storm and see if I can improvise, for the lack of having said disc magnets. I was thinking of getting regular ceramic disc magnets, that have no conductive plating on it. Then using some magnetic material, that's disc shaped from a hardware store, and attach it to said magnet and using that as the wheels for my toy car. I am thinking, the only reason the design concept asked for a conductive magnet, was to save the hassle and just attaching the magnet to the metal axle and hitting two birds with one stone, instead of trying to adhere the metallic wheels to the axle, through other means (if I have explained myself correctly). Would this be feasible to move along aluminum foil, that's been magnetized by a 9 volt battery? I really need feedback on this. Going tomorrow to pick up the magnets, and all the stuff I need for my toy.