I’m working on a project that required a new technique. If you followed my last several posts, you’ll know what technique I’m talking about. I did a mixed media illustration in which I completed the pen and ink portion, then soaked and stretched the illustrated paper.
I didn’t do this without testing my inks first. I took nearly every ink pen that I had available for drawing and wrote with it on a piece of watercolor paper. This included some color inks too. The refillable inks used were Platinum Carbon Black in the Yuketake Brush Pen, and the Pentel brand ink in the Pentel Brush pen. I put down the brand and type/size as my test lines. Then I soaked and stretched the paper. I dabbed off the excess water and let the paper dry. All inks came through the stretching without running. You can see the process in https://theforesterartist.com/2015/01/25/steam-donkey-wip-update/
I selected three watercolor brushes to use for painting over the lines. First I applied Viridian with a 1/2″ flat brush, fairly gently. No problem with running here. Next I applied Cadmium Red with a #12 round. I swirled in the paint without incident. Finally, I applied Cadmium Yellow with a stipple brush. I scrubbed it in with the stiff bristles. I fully expected the ink lines to degrade. It didn’t happen. All the pens I tested proved acceptable.
You may wonder, why not just draw it out after the paper is stretched. It’s just my preference. I like drawing detailed pen and ink on a firm surface. I also like a drawing board I can handle wherever I choose. The stretched watercolor paper is fairly firm, but I like a firmer surface for drawing. I also like having all my pencil guide lines erased before soaking. Erasing can put more pressure on the paper and I don’t like doing it on a stretched surface. Also, soaked pencil lines are very difficult to erase after they’ve been soaked and dried. Once the ink drawing is done I erase the pencil. This is why I decided to try soaking and stretching after the pen and ink was complete.