I, too, like a very fine line for marking. I've been using the Fons & Porter marking pencil. It has two different kinds of "lead", one white for dark fabrics and one dark for lighter fabrics. The marks come out just by brushing...no problem. You might consider using this rather than ink. Hope one of these suggestions work. My DH gets ink stains in his pockets, so I'll be checking back to find out what works best! Good luck!