or dip pens. India ink is water soluble, nonetheless yow will discover water-proof India ink, that has shellac in the combination. To produce a fair gradation of tone, start with carefully spaced lines within the darkest locations and steadily improve the spacing as you progress toward the lighter parts. https://howtodrawwithinkpens33210.ka-blogs.com/89250799/not-known-facts-about-how-to-draw-with-ink-pens