FAQ - Frequently Asked Questions
Which magnets are suitable for knife boards?
Customer application 190: Simple knife board with counter-sunk magnets
That depends, of course, on your specific implementation.
Generally, we recommend S-15-08-N
or even S-20-10-N
disc magnets, if magnet and knife don't have direct contact.
In most cases, people drill holes in the backside of the wood and glue the magnets into them.
You can't see the magnets from the front, but the adhesive force decreases with distance.
If you hang a knife onto a board that is drilled into the wall, you are only able to put approx.
5 times less weight on the magnet than we indicated.
Please note our FAQ about shear force.
The following numbers illustrate how important the distance between magnet and knife and the shear force are during planning:
S-15-08-N:
Adhesive force directly in direction of tension: 6,7 kg
Adhesive force directly in direction of tension: 6,7 kg
Adhesive force with 2 mm wood in direction of tension: 2,0 kg
Adhesive force with 2 mm wood in direction of shear force: 0,4 kg
Adhesive force with 5 mm wood in direction of tension: 0,5 kg
Adhesive force with 5 mm wood in direction of shear force: 0,1 kg
S-20-10-N:
Adhesive force directly in direction of tension: 12,0 kg
Adhesive force directly in direction of tension: 12,0 kg
Adhesive force with 2 mm wood in direction of tension: 4,0 kg
Adhesive force with 2 mm wood in direction of shear force: 0,8 kg
Adhesive force with 5 mm wood in direction of tension: 1,5 kg
Adhesive force with 5 mm wood in direction of shear force: 0,3 kg
Adhesive force curve of S-15-08-N
It all comes down to the distance.
We recommend a maximum distance of 3 mm between magnet and knife.
With many of the larger magnets, a curve the of adhesive force development over distance is listed in the web shop (see example on the right).
Normally, one magnet per knife is sufficient.
With heavy knives (more than 100 g) you should use 2 magnets per knife, just to be on the safe side.
Customer application 491: Knife board with counter-sunk magnets
It's best for you to do your own fine-tuning.
How well the knives should hold on the board is subjective.
Start with 3 mm wood between magnet and knife and then, if necessary, reduce the distance to 2 mm or even 1 mm, before you finally glue on the magnets.
Customer application 278
with visible magnets
The most simple construction is for magnets and knives to have direct contact.
You can see such a knife board on the right.
Please browse through our collection of costumer applications with knives
to get a feel for the various possibilities.