How a Pen is Made
I find the entire process of designing and crafting a pen to be quite interesting. Until I learned how to make pens, I had no concept of how they were constructed or what was entailed in their crafting. I've documented the process for a few of my pens. Hopefully, you'll find it as interesting as I did.
Crafting a Bryce Ballpoint Pen - (early example - I've changed many of my techniques since this)