I don't know, Kiteki. Sorry. I've only built simple cables, the last being a pair of speaker cables made from Home Depot wire and banana plugs I found at Radio Shack. They work great, but I don't know where to find more exotic materials.
However, there are quite a few threads about building cables in the DIY Forum, so I'd look there. You should find quite a few builds and mentions of where the materials came from.