FAQ - Frequently Asked Questions (and their answers!)

Why do pot magnets adhere more strongly than normal magnets?

Disc magnet in free space

Raw magnet

With a "naked" (raw) magnet, the field lines move freely through the air. They surround the magnet widely in all directions and can therefore attract a counterpart from a distance of a few millimetres.
Disc magnet on iron contact surface
Pot magnet in free space

Pot magnet

The field lines move even easier through iron than through the air. The steel pot of a pot magnet directs the magnetic field lines downward to the contact surface. This causes the magnetic force to be bundled at the contact surface (see picture below).
Pot magnet on iron contact surface
Such a strong adhesive force occurs only on direct contact with the counterpart. A pot magnet is not suitable for attracting an iron subject over a distance of several millimetres, since the field lines don't cover this distance.
When handling pot magnets, keep the following in mind:
Principle: The magnets are embedded in a steel pot. The steel pot increases the adhesive force of the magnet on direct contact with a thick iron surface. If there is no direct contact with the counterpart, or if the steel plate is thin, painted or rough, you can strain it much less.
Shear force: The indicated adhesive force was measured perpendicular to the surface to which the magnet should stick. It takes a lot less strength to move the magnet sideways. Therefore, you can strain a pot magnet much less if you use it on a wall as opposed to using it on the ceiling. Please note our FAQ regarding shear force.
Rust: These magnets are not rust-free and therefore intended for dry indoor use.
Repulsion: Two pot magnets cannot be placed flush on top of each other. Why? That explains another FAQ.

 
Language:
Your Shopping Cart: 
Your shopping cart is empty
 
Tips for the safe handling of super magnets
In a Nutshell
  • All prices include 19% VAT.
  • Ordered today - sent tomorrow!
  • Postage insured Germany EUR 5,50 (shipment to other countries)
  • Pre-payment (via credit card or bank transfer organisations and companies also on account
  • Minimum order requirement EUR 15 (below surcharge of maximum EUR 7)

For details, see Terms of Delivery

Applications
Inchies

Cute inchies, alway newly arranged »