Latching
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Latch Polymagnets repel each other from a distance, but when forced passed a certain threshold, they attract and latch together.
Latch Polymagnets repel until the magnet pair pass through a defined transition point. After the transition point, they reverse polarity and attract. These amazing Polymagnets are a fundamental building block for sliding and rotating latches. This type of magnet pair always requires a mechanical centering component.