Ball puzzle
thingiverse
This little puzzle box is locked by a 3/16 bearing ball. You need: - the 3 parts - M3 bolt and locknut - 3/16 bearing ball First print all parts and put a ball in the middle part. Connect them with a 3M bolt and a locknut. You open it by turning the top part 270 degrees. Then turn the puzzle over. Now the middle part can slide open and turn.
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