Sumi Calligraphy Brushes
Bamboo brushes are relatively soft. In some cases, however, the hairs are arranged with a coarse and tapered core surrounded by soft hair. The coarse hair adds stability and rigidity to the soft hair that surrounds it.
The sharpness of the pointed tip is paramount for calligraphy and Sumi-e techniques. The best bamboo brushes will snap to the sharpest points and are made with the finest natural hair. Student grade bamboo brushes are a composite of natural hairs.