Circular Halbach Array 4 pole (8 magnets) for 5mm cube magnets
thingiverse
This is a holder for a circular halbach array with 4 poles (with 8 magnets). Search online how to align the magnets on a halbach array. It is designed to fit 5mm cube magnets. I made the dimensions 5.2mm, if you want a tighter fit just scale your print down a bit. After mounting the magnets I fixed them temporary with super glue and covered the whole array with epoxy resin. You can arrange the magnets in different ways so that the field is stronger on one side like shown in the pictures under the magnetic viewing film.
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