← Application notes · Alignment

Self-align a connector to a repeatable position — without a mechanical guide

How one Align Polymagnet seats two halves in the same spot and orientation every time, with no keys, pins, or chamfers.

Polymagnet application engineering · 5 min read

Magnetic connectors — power, data, charging pucks — have to seat in exactly one position and rotation, blind, one-handed, thousands of times, without wearing out. The usual way to guarantee that is machined geometry: keyed shapes, guide pins, lead-in chamfers. Precise, expensive, and it wears.

Let the field do the aligning

An Align Polymagnet encodes the alignment into the magnet itself. Many small poles ("maxels") are printed on one face in a pattern that only reaches full attraction when the two halves are correctly positioned and rotated. Approach it slightly off, and the field actively nudges it into the seated position — a self-aligning magnet that snaps to the right spot.

The tolerance you used to machine into the housing is now programmed into the magnet.

Why it beats a mechanical guide

No guide features to machine, mold, or wear; forgiving blind mating (the field finds the seat for the user); and a satisfying tactile "click to the right spot." Because the field is concentrated at the surface and near-zero beyond about a quarter inch, there's little stray field to disturb the electronics you're connecting.

What to specify

Function familyAlign — center and/or rotational
Alignment2- or 3-position rotational; radial centering
PairingMatched pair, one per connector half
MaterialNdFeB (N50), Ni-Cu-Ni; to 60°C
Stray fieldNear-zero beyond ~¼″

Related patterns cover magnetic connector alignment, latch design, and 2-in-1 hinges — anywhere two parts must meet the same way every time.

See the behavior for yourself

It's hard to believe until it's in your hand. Order a demo kit, design your pattern, or talk to an application engineer about a custom force curve.

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Sample application note · an example of automated marketing department output · a WholeTech build. Specs are qualitative where public data is limited; confirm force curves with the manufacturer.

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