Spencer Chase is right -- a working jeweller may well have the sturdy
rollers for shaping wire [090708 MMDigest].  They are available to
purchase from jewellery wholesalers (and possibly eBay) at not totally
impossible prices.

It is much the best, if not essential, to anneal the brass wire before
rolling it, and probably again afterwards, as the rolling action will
harden it again, probably making it fracture when bent at right-angles.

Good luck!
David Evans
British Columbia, Canada
http://www.revelstokenickelodeon.com/