The O:pen is a simple but effective pen by the designer Lars Zimmermann. It comes with a special circular skill: Regular pens are usually designed for one type of refill. O:pen connects to all available refills; reuse made easy.
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This pen can hold different kinds of refills. The inner tube has an insert thread to lock the refill in place with a standard set screw.
Available now
- as local make
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Design info
- “It happened to most of us: Our favourite ball point pen is suddenly out of ink. We search for another ball point pen to swap the refill. Only to discover: the refills are different. The new one does not fit. Well if PenOpen is your favourite pen this won’t happen again.”
- Above you can see a picture where a cap is added. The cap is just a small piece of silicone tube. The cap is not part of Trikkas parts catalog.
- Please visit the original post by the designer to learn more about Penopen and how to make it and to see iterations of it. Initial post backup.pdf
- Pictures by Mifactori, CC-BY-4.0
- Disclaimer
