
Here’s a couple useful links to look at: (this one is for the ‘hicarb’ version, check out the comments), and this one is for the black star ‘matte’ version. after looking in to it a bit more, seems the black star inks might not be a good choice for refilling the brush pen. Wanted to tack on to this public discussion for the sake of anyone who might stumble upon it in the future, pedlarspen gave me some useful info after this post. I read someone else mentioning this even for the brush pens, and thought back to your post. I really appreciate all the info you gave, especially the tips such as how ink in a fountain pen will thicken in to sludge if you go more than a few days without using it. I’m researching and reading about this, I just thought perhaps these would be very simple questions for you. You have shared so much already and I”m so grateful for it. Please feel no pressure to respond to this. I checked out that ziller soot black you mentioned that you like when using a straight brush – I noticed it is an acrylic ink, so I’m assuming it also would NOT be a good choice for something like a fountain pen, correct? But I was confused and hesitant as it is an India ink. Ph Martin’s Black Star India Ink for their pentel brush pens – it is super affordable, and I love that it is both archival and waterproof. I looked over the inks that you recommended (Platinum carbon, De Atramentis Document ink, Rohrer & Klingner Sketch), but they were still a little pricey. Would this warning hold the same for the pentel brush pens, too? I saw a youtube video where the guy also said, don’t use india inks in brush pens because they can clog it up. I remembered how you’d warned against using any india inks or acrylic inks in fountain pens, because it’ll kill the brush. This seemed a lot more economical than continually purchasing refill cartridges. I read that you can refill the cartridges with a blunt tip syringe + your own ink. So I ended up purchasing one of the pentel pocket brush pens, just to try it out.

– sorry for taking more of your time here, but I had a quick question for you.
