Re:Best Pens for 2022: Gel, Ballpoint, Rollerball, and Fount...
by rakwoelq on Friday January 07, 2022 @01:39AM
(#29835803)
I hated the Space Pen because the ink always felt sticky and it wrote poorly.
Schmidt 4889 is a substitute pressurized refill that is compatible with the Space Pen, although I have not tried it yet.
[1] https://www.scientificamerican.com/article/fact-or-fiction-n...