K5MOW, thanks for the thoughts on the 700R.
I've often wondered, in these vac-fills, they reference that plunger sitting atop where the ink enters the section and feed, and how that should be tightened down before getting on a plane so that pressure changes don't force ink out of the feed. Got that. So how come this isn't an issue with piston fillers, cartridge pens, and any other feed mechanism? Or is it, and the vac fills are the only ones that have a real solution? I've flown a lot with my FPs (converters, cartridges) and never had an issue with leakage, but is the vac fill somehow different in that regard?
It just seems annoying to have to keep the end of the pen loose in order to allow ink to flow when you want to actually write.
I must be missing something
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