3x4 Square Whip-It puzzle
thingiverse
A few extra things you'll need for this is some 4x2mm magnets 18 total and superglue. Magnets I recommend are these https://www.apexmagnets.com/magnets/4mm-x-2mm-disc-neodymium-magnetsThis is a simple puzzle that almost anyone can solve. This is loosely based off of 2 puzzles that where very popular in the early 80's
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