Are these new sparkly inks safe for my vintage pens? If you want to be really, really safe, then putting inks like Waterman or Sheaffer in your vintage pens is best. As there is shimmery, or gold/silver particles ink these newer inks, it can reduce flow if the ink dries out in your pen. It can also be more difficult to clean out of pens that use sacs – the particles may stick to the …
