To twist a string, set the two parts of the machine somewhat farther
apart than the finished length desired, put on as many threads, from
hooks on the tail piece to corresponding hooks on the head piece, as
will make the finished string the desired size. Observe how these
separate threads were twisted, and start the machine in the _opposite_
way. Twist until the three strands kink readily when the head piece is
brought nearer the tail piece. The tighter these are twisted, the harder
the string will be. (Soap rubbed on the inside of the belt may make the
belt carry more power). When these three strands are twisted enough,
remove the two lower ones from their _hooks on the head piece_ to the
upper hook. Twist in the _opposite_ direction until the string kinks
again, and it is made. If the three strands are waxed, a stronger string
will be made.