very true. Ok will do. I believe I've heard of solenoid cannons that can shot out a magnetic rod from it. This does sound like a high energy project b/c I want the magnet to float. I think the PIR detector set just right and timing to adjust polarity would work and use of magnetic wire. Ok a H-bridge for polarity switching. I like the idea about a coated magnet to prevent glass from breaking or hearing the "ting" noise constantly. Ok a thinner wire wrapped more revolutions is ideal. It would be awesome if this magnet had an led on it too. What shape should the magnet be?? I was thinking a cylinder which wouldn't be able to flip in the tube. I'm thinking it would have 3-4mm spacing between magnet and glass. :%