Handmade in America, I designed and made all the parts. For more information on this particular model, see here.

I also did an explanatory video.

This is a fountain pen that is designed around the Zebra G dip nib, with provision for other nibs; You get to make your selection before you purchase.

To maximize this pen’s writing functionality, at will, you can swap in other “screw-in ****JoWo #6**** nib units” into this pen. Now, you can use a Zebra G, or many other nibs! You are almost unbounded. If you have questions, please contact me.

Notes :

1. Cocobolo is all over the place in terms of appearance. Cream, Brown, Red, Orange, Black, Purple with streaks of white. Any, or all of these is apparent. You won’t get the pen shown in the photograph, but the collage was assembled to convey a fraction of the range of appearances for this material.

2. Filling system is screw-actuated piston. (Kovacs.)

3. The filling system reservoir is Cellulose Acetate and though more environmentally friendly than acrylic plastic, it is quite stainable, so be forewarned.

4. Ensure the piston screw is all the way down (without over tightening!) before you try to screw the filling mechanism into the barrel. If it’s not, you won’t be able to put the barrel on. Don’t try to force the barrel on if it won’t screw in all the way.

5. Don’t over tighten the piston knob once the piston head is fully withdrawn.

6. Once the filler is screwed in, snug it gently. Only tighten it enough to keep from coming loose when you take off the cap. Don’t HULK OUT. A few degrees after the ink window presses against the barrel lip is enough. 

7. Don’t unscrew the knob without a nib collar in place, the piston will unscrew, and it’s holy hell trying to get it back in there without the right tool.

8. Each run is improved from the last, and there will be differences between what images are shown and the item you receive. Here, there is no ink window, and there are new ball clips.

9. Because I’ve taken away the ink window, I gave the filling system triple start threads, so you can access it more rapidly than before.