I've had good results building my own power cords. Most of my store bought cord were JPS Labs. I use a 8 gauge wire solid core copper, stranded copper and solid core silver depending on sound I'm looking for. Solid core has big bass and more detail and stranded is smoother. I copied the way JPS did it with vibration control. I put the wire in some durable tubing, hot glue one end and fill it with brass powder bought off the internet( you can use any material you want, metal sandblasting material will work) I then take a palm sander and run it up and down the tubing to pack it very tight. I use either brass or chorion blocks( stuff counter tops are made of) and drill holes in them and use them as clamps at both ends of cable sometimes also in the middle. I put a sleeve over clamp (behind plug)made from metal tubing or pvc to hide clamp and shrink wrap. I use heavy duty screws because I tighten down really hard, cheap ones will break.
