David Nebenzahl wrote in message
.com...
On 4/26/2010 11:01 AM William Sommerwerck spake thus:

N_Cook expostulated:

What is it called?

Ferrite?

There are flexible ferrites (magnetic material mixed with polymers) than
can
be easily cut.

Like the stuff used to keep refrigerator doors closed worldwide.


--
The fashion in killing has an insouciant, flirty style this spring,
with the flaunting of well-defined muscle, wrapped in flags.

- Comment from an article on Antiwar.com (http://antiwar.com)

Not looked behind any of those but I had forgotten about those flexible
sheets for metal noticeboard anchors which are brown and weak.
But the black hard material of inductive tuning slugs are also called
ferrite.

About 4 times the mV response on my remade spring line compared to the
unbroken original one of the pair for same input. Will await any verbal
feedback on strength or tone of the new reverb tank