[Source] Silver cable?

I have seen sterling cable used as a necklace or bracelet and I have
seen gold.

Where would I find FINE silver cable in 3mm width and less?
Preferably sold by the foot and not as a finished neck cable.

It MUST be Fine Silver because I am intent on firing it in the kiln.

Regards,
Andrea Streicher
Striker Studios
Mixed Metals and Glass Jewelry
http://www.strikerstudios.com