Filbert paintbrush

Filberts are particularly effective in blending work, usually of a figurative nature.

Many artists agree that natural fibers work best for filberts, because the hairs stick together better when wet.

Hairs that can be used are sable, mongoose, bristle, badger and synthetic.

[1] The Filbert paintbrush also makes a thicker stoke.

Artists can use this to make thicker lines on a painting.