I have a magnetic stirring hot plate in my lab. The stirring sticks are much smaller diameter and magnetic. I have different sizes. They also do not float. That looks like it might float. they need to sit on the bottom to be effective. I also don't see how the metal would stay evenly spaced. The ones with permanent magnets in them are finicky enough.

Last edited by mick53; 09/16/2026 9:25 PM.
Old enough to know better, too young to resist.