Dami brush
The size of the Dami brush determined how much liquid Gosu you could hold while filling the area of your painting. The Gosu will be released and returned to the brush depending on how much Gosu needs to fill the area to be painted. You need to learn how to squeeze the brush with your fingers to release how much Gosu to apply to the area. You almost stop breathing, but when I see Miriam painting with Dami Brush, she is so relaxed and moving fast.
I spent almost the whole day painting with a large Dami brush.