If you want to model a good string jig go to www.bowstringjigs.com. It is the one I use and it makes a fantastic string. One of the things that you really need if you can do it is to be ablel to make your servings while under tension. With the jig I am using it is able to put 300 lbs of tension on the string while I am serving . I just recently made a string and cable for a guy in the club that I belong to. It was for a single cam bow so it was a pretty long string and I always had trouble before making a string that didnt have trouble with peep rotation. Well this jig took care of that problem totally. It is good to be able to make your own strings. That way you can try different materials and find what works the best for you and your setup. I use mainly BCY materials myself but Brownell is a very good product also . So you couldnt go wrong with either of these products.