when converting a fountain pen to an eyedropper fill pen, one of the most common problems is that the heat of your own hand expands the air bubble that forms inside the barrel as you use more and more ink.
Has there been found any means to counter this prblem other than refilling/topping-up your ink reservoir when you've only used a little bit?
It kind of makes it counter the point and the aesthetic to refill your pen every little while without watching that large amount of ink dwindling and sloshing around. The air bubble is part of the aesthetic if you ask me. I want air bubbles. Large ones too.
How do you counter the heat?