I think I'm in the right forum section, but mods feel free to move the post if it isn't. I've got a question about inks "lubricating" the nib, and whether that's affected by water solubility. Anyway, context. I recently started using my neglected Waterman Serenity Blue again, and I'm about to chuck the bottle out the window. It's horrible . I feel like I'm writing without ink, and my handwriting is garbage because of the vastly different feel. Thing is, the Waterman is the most (read: completely) water soluble of my four routine inks. I also remember reading about "lubricating" inks, and I got the idea that "lubricating inks" helped reduce the friction between nib and paper (I may have misunderstood, though). Do more water-soluble inks tend to cause more friction when writing? I figure maybe it's got something to do with viscosity? Or maybe less pigment/filler/whatever in washable inks that causes less lubrication or something. Any explanation would be greatly appreciated; anything for that good writing experience, hey?