Push Pin Magnet
thingiverse
Roughly the same size as a traditional push pin, this item is ideal for printing with the magnet cavity facing upward for best results. Requires one 6x3mm neodymium magnet for optimal performance. I purchased 100 of them for approximately $12, available at the link below. http://a.co/cK0JzDi Updated August 12th, 2019: Added a version designed to accommodate 1-1/2" x 1/2" magnets.
Download Model from thingiverse
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