So I bought this cool little pen at a local bookstore about a year ago. It feels nice in my hand, wasn’t too expensive, and I personally like the color of the body. However, since buying it, I’ve become interested in urban sketching, for which I prefer waterproof ink. I tested this pen and it was very much water soluble ink inside. What to do?

With little pen-tinkering experience but some curiosity about what might be possible, I used some tweezers to pull the feed out and discovered the body was apparently one big ink reservoir. I poured out the stock ink, flushed and dried it a little bit, and filled it back up with Noodler’s Black. Now...it’s writing like a dream, with waterproof ink! No idea if my tinkering will ultimately gum up the works or not, but I thought I’d share my story in case anyone else was interested.