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magnetic ball bearings Answered

How do  magnetize my own ball bearings for making magnetized Fullerine geometry? Sorry cant find the right word for it, i'm obviously scientificaly challenged.


One way to magnetize a metal sample is by using a pre-existing strong magnet. Recall how to make your own compass by dragging a needle across one pole of a big magnet? Same principle.

You can do the same thing with your ball bearings; use non-metal foreceps (ask the nurse at your doctor's office for a couple of pairs). Make sure you always pull a bearing in the same direction on every pass, until it's magnetized as much as you want.

There are other techniques, such as heating the bearing above its Curie temperature, applying a strong magnetic field (e.g., with a solenoid), then cooling it to freeze in the aligned domains. However, those are less DIY-able without dedicated equipment and safety procedures (where are you going to put the glowing balls while they cool?).

Thanks. I have seen the Neocube but I cannot affotd them so I want to magnatize ball bearings myself. The 2nd. method you described is well outside my skill level so I will have to re-think. (silly me, I thought it was dead simple) LOL. The1st. idea sounds feasable so I will try that. Here I go.

Were you successful with doing the "compass needle" magnetization trick?

So sorry. This was obviosly not the right place to ask a question. Thank's a lot.


7 years ago

There is a commercial product called the "NeoCube" that is essentially your wish.

However, I'd be careful if you have small children. Ingesting two rare-earth magnets has killed a child (see sub:Hazards).  Your DIY idea would not be deadly.