The Duo (twin nib spy fountain pen) and Capless Flip

 I reckon since I have a couple of days left I might as well make this prototype stuck in my head.

 The Duo

First, the Duo.

 Macgyver might like this..... hahaha...

Nothing fantastic actually....It's a 2 nib fountain pen. That's all. Using the same nib as the Trinity. Made like a Swiss army knife, it is supposed to store with both nibs up. I intended to make this pen easy to hold, slim and easy to remove the nib units.

Personally, i think i have achieved that. :)

Now, the cap. it is spring fitted. notice the 2 extra long legs is bent? yes, it holds onto the pen body when capped so that it does not fall out. that is a property of wood that is most fascinating.  

Grooves are added to make the cap catch better.

 

The full assembly.

So, the operation in process....

Of course, the nib removal should be easy as well, as shown. Eh, some minor enhancement is still required, but well, that's minor. :p




Some WIPs...






  
Hmm, i realized by unmodifying it and keeping just the hidden nib section, i have made myself another capless! just turn it out! So, next, capless Flip!

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Capless Flip 

By sealing the first nib's hole, the inner nib has its own cap. Then just flip it out.

Mass Production version and Military grade version.

Status: classified.