Simple Piston Fountain Pen

It is proof of concept of smallest possible and simple fountain pen with piston mechanism.

To use OpenScad you also will need threads.scad library (http://dkprojects.net/openscad-threads/). Pen size and some features (for example cup thread position) can be changed.

Most recent sources can be found here https://github.com/sanja-byelkin/SimplePistonPen

To make the pen default configuration additionally required:

1. Nib #6 (it is nib size standard, can be used any nib (Peter Bock, Jowo