Tools/materials: cotton thread, binding needle, punching machine, dovetail clamp.

1, arranged in the order of volume number, contents in volume, documents and reference table, and punched. In order to install the perforated file, it is clamped with a dovetail clamp, so that it is not easy to be scattered and it is easier to thread and bind.

2, binding needle thread, single strand, from behind, threading in the middle of the hole.

3. After wearing the front, you can wear it from the upper face or the lower face, both of which are acceptable, depending on personal habits.

4. Go through the file at the back, and then from the middle hole, there is a back to the front, and from another hole to the back.

5, knot, cut off the excess thread, you can complete the binding. Be sure to tighten the rope to prevent the file from coming loose. After that, our files were bound.