Watercolor Brush with reservoir: A fan's demo
Sketchcrawl would not be as portable for me as it has been without this little helper. These are the essentials: mechanical pencil, small sketchbook, watercolors, and this plastic wonder. I found mine at the Kinokuniya supplies store across from the Kinokuniya bookstore in Japan Town in S.F. I'm sure you can find it elsewhere (the Yasutomo Waterbrush I found online is not the same as mine but must work the same). I'd annotate these photos, but really, it's as complex as chewing gum. It will take some getting used to for traditionalists, I mean sometimes you just don't want that much water with the pigment--a small quirk of the tool that one can live with, I think. I hope this is instructional. Post a comment for specific questions.
Check out the watercolors in these posts (1 2 3 4). All were done with this brush on Ingre pages of the famed Fabriano Classic Artist's Journal.
Found the brushes, as mentioned by Justin. Went to Longs and found the Royal Langnickel Aqua-flo pack of three brushes. Small medium and large. Made in China. Quirks of Art Link
Niji Waterbrush by Yasutomo is sold in single brushes also at Longs. Made in Japan. More expensive than the three pack Aqua-flo. Maybe price equals quality. Art Supplies Online.com Link
Pentel Aquash is the one I use and, for my money, the best. Though I can't seem to find net source inside the U.S. Link Link
The "Website of Russel Stutler in Tokyo" has a rundown on his experience with the waterbrush here.
Wetcanvas.com has a thread on people talking about our fabled plastic brush here.