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Originally Posted by tfar
Originally Posted by
GadgetFreak
It is the point up saving you there. The best way to carry a fountain pen on a plane is point up, and nearly full cartridge. It is the air that expands due to the decreased cabin pressure. If the point is up, the air just goes out and the ink stays put. If the point is down, the air is trapped by the ink (since the air goes up of course) and so when it expands if forces ink out. Likewise, the less air in the pen, the less volume change from the change in pressure. The ink doesnt change much if at all since it is a lot denser.
Fine, explanation. Thanks a bunch. I'd still go with a cartridge or converter where some ink has been squeezed out. Perhaps 10-20%?
Or, if you use a converter, just empty the ink back into its bottle. Problem solved or throw the cartridge away. Problem solved at a small expense.
Yes, I think that is fine. If you look at most manufacturers instructions on filling they will say the pen filled when you fill with ink and then reverse turning the plunger and push a few drops out as described by you and the OP. I have traveled with MB, Waterman, Parker Namiki, Pelikan and Dupont pens without a problem by doing that. As long as the point is up. The Pelikan (M800) seemed to never leak no matter what but a couple of the others leaked if point down because I forgot.