All the cables that I build for myself, friends and for the shop I shoot for are made from UltraCam. It is a great material for cables - no creep, no stretch and as stable as can be. The strings that I build are either TS-1 or D-75 Thin. These are also great materials, but I think they are suited for strings and not cables. Now, you can build a string from UltraCam, but it most likely will be slower than TS-1 or D-75 Thin. You can also build cables from TS-1 and D-75 Thin, but they may move on you.
The products I mention above are Brownell products, but you can substitue BCY 450X for UltraCam and BCY 8125 for TS-1 and get the same results.
The products I mention above are Brownell products, but you can substitue BCY 450X for UltraCam and BCY 8125 for TS-1 and get the same results.