I have a clear stipula passaporto (later model, no threads on section) that has made a few transcontinental flights. No matter how well pens fly on shorter trips, I don't recommend taking them say Chicago to London. It is a mess.The pressure changes at that high of an altitude forced the ink straight down into the grip section between metal and plastic, pooling between the two levels in the section, particularly concentrated in the upper area that is sealed off with an o ring. Though I've been working on cleaning this mess up for quite some time a frustratingly large amount of ink remains up theretrapped inbetween the metal and the plastic on the grip section. I've used the search feature here, on youtube, and elsewhere to turn up quite a number of posts and blogs about disassembling the pens for cleaning but none have shown how to take apart this particular model of the pen.
hope this photo suffices. you can see the ink trapped in both areas of the section. Is there ny way to get it out? I am not inclined to purchase an ultrasonic cleaner just for this situation.
I have removed nib and feed, soaked and soaked but there's no way to get water in or ink out. I think the only solution is to disassemble the grip section. So far I've tried gentle force and it won't budge. I don't want to break the pen. Has anyone else manged to take this section apart and clean it?
Mods, sorry if this is in the wrong forum. I thought it would make more sense to post under Italian pens than repairs.
Many thanks for whatever advice you may be able to offer!