If no one knows how I'll just experiment until hopefully I find something. Basically, I want to be able to pour glue into a cavity and when it hardens it should, obviously, be the shape of the cavity and magnetic.My first thought was to try and grind up one of those little super powerful square magnets and mix it in with the glue. But then I realized you could probably just use magnetic powder.Has anyone ever done this? Any suggestions? I'm not exactly sure how strong I need it to be but I'd say about as strong as a refrigerator magnet, maybe a little stronger. via /r/DIY http://bit.ly/2UuIR6S
