Meissner effect / flux pinning demonstration rail suitable for popular magnet size of 10x5x3mm. The rail includes stopper ends to prevent the levitating superconductor from escaping the magnetic rail. Once printed (it takes about 3-4 hours) all you have to do is simply insert the magnets into each hole. You may have to use a bit of force as the hole is the exact dimension of the magnet. This is to ensure stability and to prevent magnets from accidentally flying out during the experiment.