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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.

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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.

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CrLz

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.