I’ve been enjoying filling the various refillable pens in my collection with fountain pen inks. They allow me to use more of my existing ink and experience the vast array of colors in a different form factor. Super light fountain pen inks can now be used to underline passages in a book or sections in my notebooks where the ink may not be as useful in an EF fountain pen. I can experiment with super sheeners or shimmer inks in an inexpensive tool as well. I have not yet tried to clean the Pilot Spare Sign Pen but the replaceable tip will make it possible to reuse the converter and pen barrel even if the tip needs to be swapped out with each color change. Once the Con-40 was installed, I filled the Spare Sign Pen with Colorverse Matter, a lovely grey ink. I wanted to play with a color not commonly found in felt tip pens. The color has a range of hues in it and dries a little darker than it appears when wet so it was fun to play with it in the Spare Sign Pen.

Writing sample on Tomoe River 52gsm and Col-o-ring card with samples of Kuretake Karappo refillable pens for comparison.

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