Rethink this project. It is wrong on so many ways. It may look cute in the centrefold of Caveman Home Hacks but it is impractical. Copper is too flexible for curtains, it will need plenty of brackets. Soldering without skill so that the solder doesn't protrude beyond the socket is an art, copper tarnishes, rings don't slide/glide over it, the joints will irritate you each time you use the curtains and I'll never have the opportunity to tell you that I told you so. Steampunk is only steampunk if it is done to excess. One little curtain rail in the corner of a bedroom ain't gonna make you a leather-and-brass hard-ass steampunker.
Go to a curtain shop, get proper rails and do it like it is supposed to be. And yes, get copious curtain, at least double as uncle Globalti said, because if you don't, you'll look like a pauper, wannabe half-baked steampunker too old for that shoot.
