After asking for recommendations here, I bought a Platinum Century #3776 and I am delighted with it. After a couple of months using it, it's the most reliable fountain pen I've ever had (although this may be normal as the other pens I had were cheaper...), and I love the nib's feel too.
The only downside of it is the fact that it doesn't take standard cartridges. I have bought the international cartridge adapter, and it works, but at least in my case (with Waterman serenity blue ink) it decreases reliability. With a Platinum blue-black cartridge, the pen never ever skips. But with the adapter, it sometimes does, and I need to squeeze the cartridge to get it working reliably for a while.
So, question #1: is this just a necessary evil with the adapter, or should I be able to get the same reliability as with Platinum cartridges if I find the right ink and/or replace the adapter with another?
If it's a necessary evil, then one possibility would be to stick with Platinum ink. I like their blue-black color, but I have read horror stories about it being an iron gall ink that eats nibs for breakfast. I definitely don't want to damage my pen. However, since it's a gold nib, maybe this shouldn't be a problem?
So, question #2: can Platinum's blue-black ink damage a 14K gold nib, or is there no risk of damage in this case?
Finally, a third option (which is not my favorite as it's more uncomfortable, but it can be a good B plan) would be to refill cartridges using syringes. But I have also read horror stories about bad stuff happening when you mix iron gall ink with other inks (in fact, Platinum themselves warn about this).
So, question #3: can I refill a cartridge which originally held iron gall ink with a different ink? What precautions do I need to take to do so?
PS: I know there is also the possibility of using a converter, but this is not something I like in my case, as my pen travels a lot between home, work, and various places and it would be a bit too messy for that kind of use.
Thanks in advance!
Edited by Kalikrates, 12 December 2017 - 11:21.