I recently toured Jefferson's Monticello and I was struck during the tour of the library by the description of some of the challenges that Jefferson faced using quill pens.
This seemed particularly surprising because the library is filled with finely crafted metal tools and technology (clocks, a small metal orrey, drafting tools, etc...).
What prevented the development and adoption of metal dip pens until the early 19th century despite seemingly clear evidence that the technology for their creation existed much earlier?
BONUS: Why, if they did exist, would Jefferson, a renowned technophile, not have taken up their use?