I am using an iron gall ink in a (rebranded) Jinhao x750 right now, and I get a nice, dark line after a fill--it surprised and delighted me the first time I tried it, a year or two ago--but the writing gets paler and paler as I write, and also from day to day, unless I occasionally work the converter to replenish the flow. Is there anything I can do to get the flow to be more consistent?
What I think is happening when you cycle the converter is that you're partially filling the fins, which helps bypass any blockage in the ink channel. When the fins drain, the ink has to pass the blockage again and the writing gets paler.
I use Diamine registrars Ink - the strongest IG ink, as my everday ink.
It helps to use your pen everyday to stop the IG precipitating and clogging the pen.
Also, whenever you clean you pen, rinse it with vinegar. A 10% w/v solution of citric acid or pure vitamin C also works very well. This should rid the pen of any solidified iron gall.
For further information, see: http://kwzink.com/la...pens-iron-gall/
It's very informative. Iron Galls are KWZ's speciality.
If your pen is getting very clogged, I would fill the pen with vinegar or Vitamin C/Citric acid solution, then stand it with the tip touching tissue paper. This pulls to solution down the ink channel. Wait for 5 mins or so to let the pen drain, and repeat. I find you'll always get some more ink out, so the extent to which you do this is based on personal preference. I'm a tad obsessed, so I multitask it with something else, and keep doing it until the liquid comes out is clear, but that isn't really necessary.
If all fails, pull out the feed and the nib, and run a thin piece of paper/plastic/metal throught the ink channle and between the tines to remove any solidified iron gall.
Edited by stenolearner, 23 July 2019 - 17:29.