Indiana University Libraries Book Repair Manual
Glue Brushes
The medium-size cylindrical brushes are the best choice for general work, as their holding capacity and distribution qualities are both good. The larger cylindrical brushes (e.g., the black and red one) are occasionally used for work of more expansive area, and the largest cylindrical brush in the center is a paste brush. It is reserved for applying wheat paste to large surfaces. The small flat brushes are ideal for tipping pages, paper mending, and getting into tight corners where the larger brushes either can't reach or would make a mess. It is imperative that brushes be washed out thoroughly with warm water and soap after every use.