Just a little extra - I have been watching Michael Broberg's thread asking for the perfect click pen. Wonder why no one has made one to match his criteria. I know I for one would be buying them.
I think the reason is that, IMO, the pen kit design and manufacturing industry has stagnated. . There is just not a big enough market to financially justify pen kit innovation. . Plus, the people that design pen kits are probably not pen makers and don't take sufficient interest in what pen makers want.
One other example that comes to mind is the Sierra twist style pens. . Originally, a 27/64" tube was used in order to accommodate the old-fashioned barrel twist mechanism at the center of the pen. . The result was that the blank material, after turning, was insufficiently thick to allow any creativity in shaping the pen. . Finial twist mechanisms eventually got developed; they are both less bulky and positioned so that the brass tube diameter could easily be reduced to, say, 8 or 8.5 mm. . This would allow the finished blank material thickness to be doubled, allowing more creativity in the shaping. . But no manufacturer has yet done this, and I wish they would.
Would be interested in others' comments.