Making Sense of Different Grades of Magnets

If you've ever gone down the rabbit hole of looking for strong neodymium discs online, you've definitely run into those confusing alphanumeric codes that represent the various grades of magnets available today. It's not just a bunch of random jargon meant to make things look technical; those numbers and letters actually tell you exactly how much "oomph" a magnet has and how it'll behave when things get hot. Understanding these grades is the difference between building a project that works perfectly and one where your magnets either snap into pieces or lose their grip the moment the sun hits them. ...

May 11, 2026 · 7 min · Deakin Gayer