My string jig is one wood arrow shaft in the bench vice and one nail in the bench. After having made the first loop I put the loop over the shaft in the vice and place a small spring clamp where the twist stops to keep it from unraveling. Then a nail in the bench for the second loop to go around, but before I start the second loop I lay in counter twists in each of the the two skeins. If I don't the whole string will be a mess of twists. This is done so when the second loop is finished there is none or very few twists in the bowstring. How many counter twists to be used depend on the way YOU do it. In my case about 30. Bue--.