Materials: 15 cases comprise 3 double pages each Each paper size 148x105mm; two nerves in the string; cotton yarn, steel needle.
Procedure: The basic stitch is a chain described above, but the thread placed along the inside seam fold is fixed to the string with two nerves in the following ways:
-set is a wooden frame setting ties in with the hooks nerves
-references are created for the holes in the chains along the fold seam of the first file that is placed with the cutting head to the right and folding seam towards you
-enter the thread in the first issue by reference by the cut of a foot and moves toward the cutting head
-joint nerve at the first, the thread goes all ' height of the axis of the nerve to the outside, passes around the nerve and falls into the crook of sewing from this same hole
-the thread continues along the crease of internal stitch and fixed with a suitable mode to the second nerve, then came to the hole near the foot of cut, the thread enters the fold of the stitch of the second issue and you do the same steps
-hour first and second file is then secured with a double knot in chain stitching as
-the third file is placed over the first two, the thread enters the fold of sewing and exits at the first nerve: here, instead of returning immediately in the hole after turning around the nerve, the thread performs two or three laps around the nerve without being: it is the "clearing rounds", made to compensate for the distance between steps around the nerves between the files
-this operation is repeated for the second nerve of the third file and all the following files to the third last, the third issue, also, the files are made solid by the chains
- in the last two sets are not made the rounds of compensation, taking the characteristics of the passages in the first two sets
Characteristics of a suitable sewing up the nerve: the thread running inside the fold of stitching must be very tense, and do not move if pinched by the fingers, taking the body of the book with the thumb and index finger over the cut on the back of this head should not move excessively when excited with opposite directions with both hands, the nerves must be perpendicular to the fold of stitching of the records and must not run in the spaces created by the thread
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