How do you go about demagantizing a sewing needle that was placed on a magnet and then became magnatized?

one side is north pole, the other is south pole, place it on the other side. or they make little cheap magnatizer, demagnatizer things with a hole in them that you just stick things thru the hole.

You can also heat to nonmagnetic. :)

Actually, those little deals like Junior speaks of are handy as a pocket on a shirt. I keep one in the roll-away for screwdrivers. De-magnetizing a screwdriver head is awfully handy when you need to change a cord on a grinder to keep the little grinder plummies off the screwdriver ( just in case you forgot to blow the thing off before you went at it with tools). Those golf club lookin magnets ( on a handle) are absolutely handy for cleaning up in front of the welding/cutting table and wives/grandkids fascination with them will get you a free cleanup sometimes The de-magnetizer is awfully handy to keep screwdrivers clean for the drawer too.

A demagnetiser is something I've been after for years. TenHammers, I've got plenty of shirt pockets but what exactly is the thing called and where would you get one.

http://www.wihatools.com/40010ser.htm

Doug, this is exactly what I have (the green thing at the top of the page). It has been in my toolbox lotta years. When needed, it is indespensable.

Thanks for the ideas