Twist weld cables. Only thing different for bike cables is that you don't need a large torch, just a mini butane torch or even a cigarette lighter will work. I also just clamp the cables in the brakes/derailleurs instead of a vise shown in the vid. Key is to rotate the drill slowly (make sure you're going in the correct direction) while pulling and maybe around an inch away from the cut. Might be too anal for some here but works beautifully to keep ends unraveling.