I am constantly tweaking magnet types and configurations working on different designs.
All of my current knife racks are wall-hanging, I am working on a few prototypes for counter-top versions that I hope to share soon!
I use N52 Rare Earth Neodymium magnets in most cases except where less pull-force is needed for a specific reason.
All of these have a keyhole style mount, one on each end, for secure mounting to a wall or cabinet.
Here are a few examples:
36" long Bocote cleaver rack for Upbeat Vintage:
12" Bocote rack (1 of these still available):
16" and 23" Mixed Species rack (1 of each still available):
16" Solid Walnut:
16" Mixed Species and Solid Walnut:
Thanks for looking!