Metal disc – self-adhesive counterpart 20x2 mm, zinc

Product detailed description

A steel base 20 mm in diameter and 2 mm thick with a zinc-plated finish, fitted with double-sided adhesive tape. You stick this self-adhesive metal disc counterpart onto wood, glass, plastic, plasterboard or lacquered aluminium and create a surface the magnet holds on to. It is not a magnet in itself — it works only in a pair with a magnet, most often with magnets and pot magnets up to 20 mm in diameter. Mounting takes no drilling and no tools.

1. What is the 20x2 mm metal disc counterpart and what is it for?
   It is a steel base 20 mm in diameter and 2 mm thick with double-sided adhesive tape already applied. You stick it onto a non-magnetic surface and create a point where a magnet will hold. Without this adhesive metal disc for magnet mounting, a magnet would not stay on wood, glass or plastic.

2. Is this metal disc counterpart a magnet?
   No. It is a steel disc counterpart with no magnetic field of its own — the product parameter states “This is not a magnet”. We supply the magnet separately according to the holding force you need.

3. How large a magnet suits the 20 mm steel base?
   We recommend it for magnets and pot magnets roughly 16–20 mm in diameter, so that the magnet sits on the whole steel base. A smaller magnet will hold too, but it uses only part of the area and the holding force is lower.

4. What is the difference between the zinc and the white lacquer version in 20x2 mm?
   Dimensions and function are identical; only the surface finish differs. The zinc-plated steel disc for magnets is cheaper and suits workshops and technical areas, while the white lacquered one blends into a white wall, furniture or board.

5. Which surfaces can the self-adhesive metal disc be stuck to?
   It holds best on a clean, dry, smooth and degreased surface — glass, lacquered wood, smooth plastic, metal. If you are wondering how to attach a magnet to wood or how to make a magnet stick to glass, this is the simplest answer. On porous, dusty or textured substrates the tape loses grip.

6. Will a magnet on 2 mm steel hold as strongly as on a thick steel plate?
   The stated holding force of magnets is measured on a thick steel plate. On a steel base 2 mm thick the real force is usually lower, because thin sheet does not close the magnetic flux completely — for loaded joints we recommend verifying the force in the actual assembly.