This is some of the paper/film I use on the pens I repair. I want every pen I sent out to write as smooth as possible, which requires high-quality buffing material. As far as I know there isn’t a finer buffing film than these. I have two types of for sale, .5 micron (tan) and .1 micron (green). Both grits measure 5″ across. Just for your reference, .5 micron is equivalent to 60,000 grit sand paper (see a grit guide here). These papers are very durable, and if used properly, will last for dozens of nibs. If you are interested in trying your hand at smoothing, Richard Binder has a great guide here. These films are the best way to get a glassy smooth writing experience! $12 each
Email me at: RonsVintagePens@gmail.com