I have vintage button fill duofold.
The pen was working fine until one day decided (with encouragement from me) to not fill.
I am sure that the sack is good; what must have happened is that the pressure bar is not working as intended. I am guessing this because I tried to unscrew the section (it is the kind that unscrews) when I was trying to replace the nib.
Is this something that I can fix myself?
When I try to unscrew the section, it feels like the top of the sack is "stuck", and after a few turns of the section, I can't go anymore. I mean, I can, but I would imagine there would be damage to the sack.
Is there a way to take this pen apart?
And if I do, is there a way to easily put it back together without special tools?
Or is there a way to "re-seat" the sack without taking the pen apart?