Something like a couple strips of aluminum or copper that a magnet passes thru. It would be free but no fast motion would be possible and very smooth.
Try passing a magnet very fast past or along a piece of copper or aluminum to feel the effect.
Seen this used on various scales and some roller coasters use it for non contact braking.
Cheers.
TomW
Without fools, you could not look intelligent. There is no knowledge without questions.
[ Parent ]
He Said: I tried rubber washer stops which are too hard. If still needed I was thinking of using magnetic stops with repulsing poles which should provide a smooth cushion although it might lead to oscillation.
Oh, why do I even bother?[ Parent ]