I am looking for more sources for nitinol wire (the
    wire that contracts when you put current through it).  Currently my
    source is Mondotronics.  Does anyone out there know of any other
    sources.  Mondotronics is pretty expensive.

Dynalloy Inc
18662 MacArthur Blvd, Suite #103
Irvine CA 92715.
714-476-1206

Prices start at $10/meter, and go down to $7.50/meter for 11 meters or more,
$5.50 for 100 meters or more, and $4/meter for 1000 meters or more.

This information is several years old.

BillW