sci.physics.electromag

Mike D wrote:

> They are available, but are costly. To make them, you have to apply a
> strong radial magnetic field during processing and that is not easy.
> The tooling cost is considerable as well, so one is not going to be
> able to purchase them in small quantities.

I was afraid you were going to say that. :-)


Thanks,

Bob
--

"Things should be described as simply as possible, but no simpler."

A. Einstein