Attach a pin vise to the end of a wire, (inserting no more than 1/8 inch). Place flat-nose pliers, so the top of the jaw is just below and on the center side of a mark, and hold wire while using pin vise to twist it, (remembering that the marked center space is to be left untwisted). Repeat on each side of all wires. From both ends of each twisted wire, measure toward the center, and mark at 1-2 inches.
Pro Tip: While twisting, count the revolutions you make so you can repeat them on each wire, creating a more consistent twist.