It's been a while since the Noodler's Ahab Flex Pen came out, and I have had this video in my sights for some time. So without further ado, here is a video that shows how to fill the Ahab with its piston, as well as how to convert it to an eyedropper pen. I even show the various ink capacities that the pen can have, and how that compares to your average cartridge/converter pen.