How to Make a Compound Bow Cable

Determine the number of strands of string material needed to construct your bowstring. Take the bow's draw-weight and multiply it by four, divide that number by the string material's breaking weight. Example, for a 70-lb. draw-weight, using material with a 10-lb. breaking point, would require 28 strands.

Adjust the string jig so the winding posts are in a straight line and set to the length of the string being made, secure the locking bolt. Consult the manufacturer's owner's manual, for the required bowstring length.

Create the strands by tying the end of the string material to post A. Loop the string material around post D and back around post A. Continue until you have necessary number of strands. Each complete loop creates two strands. For example, 14 loops should create the required 28 strands, 14 strands on each side of the string jig.

Untie the string end attached to post A, keeping the string taught on the jig. Cut the string from the spool and tie the two ends together to complete the loop.

Set the string jig so it is in serving position, which is a rectangular shape with a post in each corner. Move posts B and C below A and D and secure them into place.

Create the bowstring's end loops. End loops attach the bowstring to the bow and are typically 2 1/2 inches to 3 1/2 inches in diameter. Use an old bowstring as a guide and measure its loop size. Between posts A and B locate the center of the bowstring and mark it, then measure equal distances on either side of the center mark for you loop position. If the end loop is 3 inches in diameter, place a mark at 1 1/2 on each side of the center mark.

Wrap the the end loop area in serving thread to reinforce it. Tie the serving securely to the bowstring, about 1/4-inch past one end mark of the loop area and wrap the serving tightly around the bowstring. Wrap the serving until you are about a 1/4-inch past the other mark.

Move post B so it is lines up with the center of the string jig and creates a triangular shape. Place the bowstring so that the serving wrapped end loop area is on either side of post A.

Tie both sides of the bowstring together with serving to create the end loop. Start at the end of the end loop area previously wrapped in step 7 and wrap serving thread about 3 1/2 to 4 inches past the ends of the loop area. Cut the serving from the spool and tie the end of the serving to the bowstring; use a drop of glue to secure it in place and allow to dry. Cut off any extra serving. Repeat steps 6 through 9 to create the end loop on the other end of the string.

Take the string off the string jig and string it on the bow.

Determine the nocking point. Use a bow square attached to the string and the other end set on the arrow shelf. Mark the nocking point and set the nocking area. Mark the top and bottom points of the nocking area. The upper point roughly 2 inches above the nocking point and the bottom point approximately 3 inches below the nocking point.

Tie serving thread to the bowstring. Tightly wrap the nocking area starting at the bottom point of the nocking area and working towards the top point. Cut the serving thread after you are done wrapping the nocking area and tie the end to the top of the nocking. Use a drop of glue to help keep it in place, allow glue to dry.

Wax the parts of the string not covered with serving thread.