@brandkopf Thanks! Totally true about the roughness. I'm an addict user of 'pierre noire' (couldn't find an English name, https://fr.wikipedia.org/wiki/Pierre_noire_(dessin) ) It's soft like a 6B pencil, but without metallic reflection, it smudge less, it is more black also and not powdery like charcoal. I don't need to 'fix/spray them' , on the downside; it can't be erased; that's why It's ok on Kraft