There are often huge round magnets in different colors for magnetic boards, but unfortunately they usually don't hold properly. That's why I ordered so-called super magnets made of neodymium. They hold really well, but are difficult to remove again. This gave me the idea to construct a magnetic clamp with which the neodymium magnets can be easily detached.Link to step by step guide: https://nerd-corner.com/magnetic-clamp-for-neodym-magnets/
