First, if there is no book root for ash removal, you can use fine wood sand to gently rub it on the back, zenith and underground of the book; If there is a radical, clamp it on the inscription with a big clip to avoid scratching. After rust removal, use a soft brush to remove dirt and dust.
Second, put the book in the sink with lye, put a piece of 50 grams of lye, and then pour it into 2000 grams of boiling water, or for convenience, grind it into powder and scatter it around the book. Be sure to avoid using too much caustic soda, otherwise it will accelerate the quality damage of paper; In particular, do not use caustic soda to avoid burning paper and causing serious mistakes.
Third, boil the water to wash the bricks around the book bricks. Stop when the water reaches two inches, let the water soak slowly, then shake it a few times, then press down the book brick, squeeze out the dirty water inside, and then pour it out. Then wash the book bricks with boiling water, but you can't add lye.
After cleaning according to the above method, squeeze out the residual dirt with cold water. If there is no extruded sewage, you can take out the book board for uncovering leaves.
4. Expose the leaves and put them on the dry wrapping paper. Absorb water and dry in the shade. You can use bamboo sticks or needle and thread in places that are easy to uncover, such as the back of a book, the top of your head and your feet. When you uncover the leaves, you will encounter many situations. Be flexible, not rigid. After uncovering the leaves, put them in clean paper to dry.
Five, repair brush dipped in water, gently and quickly brush the special solution, continuous and thorough brush solution, can greatly eliminate or reduce the traces of dirt.
In this way, the paper of the same period can replace the damaged part. The next step is to flatten the broken words spliced in the same place in this way, and finally achieve the complete consistency of the spliced words, frames, columns, book openings and the bottom page. ?
According to the principle of repair, repair with slightly thicker mucilage. Once it is completely repaired, it can be re-bound, so that the dead book can be revived.