Paper & materials
Choosing watercolor paper: cotton, weight and surface
How to choose watercolor paper: what cotton changes, what 140 lb really means, cold press vs hot press vs rough, and blocks, pads or loose sheets.
On paper
Notes on drawing, washes, prints and the sheets they live on. Newest first.
Watercolor & gouache
What gouache is, and how it behaves on paper
Gouache is opaque watercolor: the same gum arabic binder, more pigment and often a white filler. Here is what that means once it touches paper.