Jim Pingle

Father, geek, serial hobbyist.

Mail carrier dropped off this li'l gem today: TWSBI ECO Cosmos Blue w/Onyx. I like the mix mine has, it's a pretty good blend.

And as I suspected, it is somewhat fluorescent, enough to make the pen colors pop under UV at least.

Now I'm trying to pick which of the Tono & Lims Star Light Series fluorescent inks to load in it. I have two more I've swatched but haven't posted yet, and the last one is arriving on Friday.

Photo of an uncapped fountain pen with the cap laying next to the pen. The nib is dark metal, almost black. The pen cap is a swirled mix of blue with streaks of purple and green.
Photo of an uncapped fountain pen with the cap laying next to the pen. The tail end of the pen is situated next to the cap. The pen cap and piston knob are a swirled mix of blue with streaks of purple and green.
Photo under UV light of an uncapped fountain pen with the cap laying next to the pen. The tail end of the pen is situated next to the cap. The pen cap and piston knob are a swirled mix of blue with streaks of purple and green, which is glowing and brighter than the previous photo.

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