For a couple of bucks you can purchase a device at your local hardware store which is made to magnetize and demagnetize tools. They work great.
As for demagnetizing heads, the method you are using sounds about right to me. I've done it several times but always wondered how demagnetizing each component interacts with other previously demagnetized parts.
As for demagnetizing heads, the method you are using sounds about right to me. I've done it several times but always wondered how demagnetizing each component interacts with other previously demagnetized parts.