Wondermagnet.com supplied the NdFeB Neodymium-Iron-Boron Rod magnets for this project.
Top magnet ¼"dia × ¼
Base magnet ¼"dia × ½
Please do not let little children play, mouth, or risk swallowing these attractive magnets,
a serious surgical situation may result if swallowed.
Also take care to restrict access to the little button batteries which may contain mercury.
I take no responsibility for any mishap, or injury that may result or occur now or at some later time because of this project..