"Fred W." <Fred.Wills@allspam myrealbox.com> wrote in message
news:GrqdnUZMxtSqsKvcRVn-qQ@adelphia.com...
> "Jeff Lowe" <jalowe44.del.ete.this@hotmail..com.invaid> wrote in message
> news:lZZYc.4845$bD5.3016@trnddc03...
<snip>
>> Since the filter case is steel I don't see how a strong enough field can
>> get passed through to do much good .
>
> It would because it will temporarily magnetize the steel filter can.
> The real question is how much of the metalic particulate is ferrous?
>
Hi Fred,
Since you work with the big stuff and seem to be knowledgeable I hope you
can help me on this. I am having trouble trying to visualize the flux path
that would allow any significant magnetization inside the filter. Wouldn't
the filter's case in effect be a magnetic analog of a Faraday cage, or are
the magnets strong enough to saturate the mild steel and establish a free
space field inside the filter?
Thanks,
Jeff