@ WW Yes ,of course you are correct. Like i said before,insted of trying to bend,curve,or deflect the field of the magnet,maybe we should be trying to neutralise the attraction of the pipe to the magnet itself. I'm sure you have done similar before,like the muller motor(kind of)where if you place a magnet on a piece of iron or steel(any magnetic material)of the right thickness for the field strength,another magnet with like pole's will neither stick to or be repelled by the steel piece-it reaches a neutral state when the material thickness is correct. Problem is with flat plate,is the force required to shift one magnet once the other is removed. Well this is where the tube comes into play,as we have an equal force around the whole magnet,and the net force required to turn the magnet 90* is zero. If we tried to turn that same magnet near a flat plate,we would get serious coging,but not while it is inside the pipe.
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