No, I'm not talking about hand made papers at all. I'm talking about specialty papers that are made specifically for special applications and are sold in the marketplace commercially worldwide. One machine I saw, for instance, produces paper at 900 feet per minute - hardly a primitive process.
Originally Posted by uraniumnitrate
You're right that these are not papers to use in the photographic process, but they are critically made to perform in a special market. My point is that specialized products can be manufactured to exacting standards by small companies. Whether the manufacture of photographic products could be economically viable, I don't know. As Ron points out, there are lots of film and paper sizes. Again, not easy, but possible with good engineering.