GraphGear-Derived Pen

Prototype pen built around my production GraphGear 1000 bodies

I'm slowly exploring ways to expand my product offerings, and I often get requests to make a ballpoint conversion kit for the GraphGear.

Turns out, that's fairly complicated and difficult to offer in volume. So, why not build something that uses the two parts of the pencil I already make myself?

The pictures show a fun little evening project I recently finished. This little pen has a ~9 mm OD. It uses a PR4 (Fisher) or Uni Power Tank refill, both oil-based. Its grip and body are compatible with Pentel GraphGear 1000 parts.