Securing Your Collection with High-Strength Magnets

You'll learn which magnets actually hold a crown cap without slipping or scratching the finish—saving you the headache of a fallen collection. Choosing the wrong magnet for your display often leads to ruined paint or caps sliding down the fridge every time you close the door. This guide covers the specific pull-force requirements and material types that keep your collection secure and pristine.

What are the best magnets for metal caps?

Neodymium magnets—specifically the small, nickel-plated discs—are usually your best bet. They're incredibly strong for their size, which means you can hide them completely behind the rim of a standard crown cap. A 10mm x 2mm disc provides plenty of pull to keep a cap from sliding, even on a vertical surface that sees some vibration (like a frequently used refrigerator). Ceramic magnets are a cheaper alternative, but they're often too thick and lack the "snap" needed for a professional look in a tight Brooklyn apartment display.

Will magnets damage the paint on vintage caps?

Direct contact between a strong magnet and a rare cap's paint can lead to micro-scratches. If you're moving your collection around frequently, these tiny abrasions add up (and hurt the resale value). It's smart to use a thin barrier between the two surfaces. A small piece of electrical tape or a tiny felt dot stuck to the magnet's face prevents the metal-on-metal friction that ruins things. You can find more preservation tips at the