The invention discloses a method for wet square
cutting in ancient picture repair, which is characterized in that an explosion-proof glass is used as an operation table, a flaw detection lamp and thick auxiliary paper with one smooth and flat surface and the other
rough surface are used for accurate square
cutting by adopting a ruler method under the state that a picture center, a small support piece and a mounting material are wet and flat. According to the method, a wet square
cutting mode is adopted, the problem that the damaged ancient painting center cannot be
cut in a square mode is perfectly solved, and soft inlaying (soft drawing) is achieved; the risk that the small supporting piece is
cut on the wall and cracks is avoided; and glue
alum water is not used for mounting material wet square cutting, so that the strip folding
disease caused by acidification
embrittlement is avoided, and the storage time of the ancient picture is prolonged. The method is simple in step and safe to operate, improves the safety of the ancient picture, improves the repairing efficiency, ensures the repairing effect, provides an evidence for a glue-free
alum water repairing and mounting technology for the ancient picture cultural relics, ensures that the picture is regular through wet square cutting, improves the artistry of the ancient picture work, lays a foundation for subsequent repairing and mounting, and is suitable for popularization and application. And a new repairing thought is provided for the ancient picture repairing technology.