Leaf springs

[Alto Mare]

Been there done that and it's too thick, let's see what Richie has to say.

By the way, got your box today Bob, thanks buddy

[Mandelstam]

And what is that from Richie.

It reminds me of the ss inserts in a windshield wiper blade. Maybe Richie will let us know. I think the small inserts may work but they may be a little thick.
bob

I think it's the spring steel from his ice fishing flag.

Image source: http://www.dailybulldog.com/db/wp-content/uploads/2011/01/sam-icefish_flag.jpg

Made a 349h spring out of a  stainless spring steel from an  ice fishing flag, Bic lighter springs also make good cut to length coil dog springs .

[surfcaster]

Ice fishing flag,steel . Just like mandlestams pic. It is thin enough to work. 

[Cone]

To quote Lee, "Duh". I should have caught that.    Bob