Hello, my son of 9 asked for a mechanical typewriter as a birthday present. I want to re-ink the ribbon. What ink should I use? Or should I just add a solvent (presumably the ribbon is dried out, not worn out)? Anyways: my FP hobby was the start of a series of experiments with obsolete writing techniques in my family. By now we got crown pen with Indian ink, stemps and cushion, slate and stylus (both digital and stone ), papyrus, and there are plans for galnoteninkt (what is that in English???)/