Primarily a jewelry-making shop, Metalliferous
is a great resource not just for crafts but for home projects that call for lengths of metal shapes. Metal sections like tube, angles, and flat bars are available in a variety of metal finishes: bronze, anodized aluminum, brass, and silver. They have an exhaustive online catalogue if you can't make the trip to their midtown Manhattan location.
And, of course, an abundance of beads and chains can be found since jewelry-making is their specialty.-regina