Polymagnet Demo Kit
part 1002031
Feel align, latch, spring and hold in one box — the ten seconds that do what a page of force curves can’t. The one to start with.
$149Buy
Feel align, latch, spring and hold in one box — the ten seconds that do what a page of force curves can’t. The one to start with.
49 N hold at 0°, ~57 N eject at ±20°. Holds firm, lets go on a quarter-turn. The signature coded part.
A contactless spring: ~25 N near contact, fading to zero by ~15 mm. Nothing to fatigue, corrode or house.
Click into fixed positions like a dial, with nothing mechanical to wear out. D-shape and round.
Pull two parts into exact center or angle, then hold. The workhorse that quietly makes things meet correctly.
Active centering plus two-way shear resistance — seats, then resists sideways slip without a key.
A lid that snaps itself shut, or a drawer that pushes back — latch and spring action with no coil and no wear.
Snap on, rotate between portrait and landscape, then hold. The behavior most people have already used.
The high-holding family — 28 sizes, 8–96 lb, concentrated at the surface. Especially strong on thin steel.
See the hidden pole pattern in visible light and dark. Confirms a part is coded, centred, and matches design.
Turn a demo into a lab: a zinc-coated plate to feel holding on real steel, a brass rod to guide motion.
Controlled-field and high-force (~$21), rotational alignment (~$42), twist-release / latch / spring (~$52). Buy the one that matches your argument.
Bring the behavior — a lid, a connector, a dial, a contactless coupling — and the pole pattern gets engineered to fit your assembly, mounting and force. The design software and custom order run through the source.
The catalog’s books on Amazon (we earn a small commission, no extra cost to you). Bookshop.org — which pays more and supports indie stores — is coming once that account is set up.
The desk toys that give you the intuition for “force you can arrange” — on Amazon (we earn a small commission); K&J via their own store.