First, let me tell you this is my first post on this forum and I really love the community and the amazing richness of information available here. Thank you all!
After years of trying to find the perfect fountain pen + ink combination to be able to write on almost any paper including Moleskine with no feathering, bleed through or other issues, I bought many fountain pens, inks and notebooks and spent hundreds of hours experimenting. Recently I discovered iron gall inks and Diamine Regisrar's ink in particular,which I find to be an amazing ink for such situations. I can use a single fountain pen and write on any paper that comes my way during the day without feathering, bleedthrough or other concerns.
However, I seem to be getting inconsistent results with it. When I fill the pen (a Pilot Vanishing Point binderized F or a Pelikan M215 EF stainless steel or a Pilot Urushi F) they write rather dry. After a couple of days (without flushing) the pens start to write very wet and much darker and saturated. The line thickness is double the size. This is the most illogical impossible yet happening miracle (curse) I am struggling with. In the worst case I would expect it to clog, not become wetter. I understand iron gall inks take a few days to reach a dark saturated color. This is not the issue. Examining the writing after a few days after the last inscription, I notice this variation too except now everything is much darker. (I can't really eliminate the possibility that the same sheet of paper could be more absorbent in different areas... but I noticed this phenomenon on several different brands of paper).
I kindly ask you to help me understand what are my options, what is going on, if any of you has experienced this.
Also, does anyone have any suggestion on how to ensure a pen on Diamine Registrar's that writes with a consistent ink flow all the time (on the same paper) without having to flush the pen daily. I want to be able to flush it once a week as part of the iron gall maintenance habit, and have 7 days of consistent line thickness, flow and everything else. It is inconsistent on the same notebook, so i'm not saying there are variations across paper types (which are more than expected).
Thank you so much in advance for all your wonderful suggestions.
since winter holidays are approaching, I wish you all Happy Holidays!