Fountain pen, blue ink. Fun with textures
How hard is it to use a fountain pen for drawing?
Since most fountain pen ink is quite fluid, you need to draw on a heavier paper. BUT the ink can also bleed if the paper is too porous. I like some of the sketch diary watercolor paper books which is what I did the topography drawing you see here. There are also fountain pen writing booklets with coated paper designed for fountain pen ink. Look on YOUTUBE, there are all sorts of videos about pens, ink, paper etc.
Very authentic texture art!