It depends on what you consider viable, and your level.
As someone in love with fountain pens and ink, I can tell you that there are absolutely wealthy pen turners, private designers, and the same with watches.
I'm glad fountain pens came up here. There's a shop a few hours away from where I stay in an old town in India called the "Pen Hospital". It was a thriving business in the 60s when my father went to college. Lots of people came there mostly to repair fountain pens. He's mostly just a stationery store right now but if you take a fountain pen there for repair, he does it for free just as a nod to the tradition I guess.
I'm glad fountain pens came up here. There's a shop a few hours away from where I stay in an old town in India called the "Pen Hospital". It was a thriving business in the 60s when my father went to college. Lots of people came there mostly to repair fountain pens. He's mostly just a stationery store right now but if you take a fountain pen there for repair, he does it for free just as a nod to the tradition I guess.