Thanks essenmein.
The problem was that I couldn't get any movement from the wire. I think it's because at 28 SWG it was too rigid and heavy. I didn't have a horseshoe magnet available, so I was using separate magnets.
The Magnadur magnets are rated at 1 Tesla but according to...
This is for an experiment to deflect a 28 SWG wire between two magnets, 3cm apart, by passing a current through it (example attached). The force on the wire is obviously F = BIL, but the wire will be passing at 1.5cm from each magnet so there will be some significant fall off of B and I can't...