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The [[Working Principles|working principle]] of a fountain pen is related to a complex balance of different forces that make possible that just the light pressure of nib on the paper can make the ink reach the sheet from the reservoir, without leaking when the pen is not used.

The [[Working Principles|working principle]] of a fountain pen is related to a complex balance of different forces that make possible that just the light pressure of nib on the paper can make the ink reach the sheet from the reservoir, without leaking when the pen is not used.

[[Image:Impugnare.svg|thumb|100px|How to handle a fountain pen]]

[[Image:Pen-Holding.svg|thumb|100px|How to handle a fountain pen]]

A fountain pen should not be used in vertical position, but the nib should be put on the paper so that the lower tip of the nib smears on it. The great advantage of a fountain pen over a ballpoint pen or a roller (that must be used vertically) is that this kind of use allows you to write using very different writing angles, while taking an hand position that is much more natural (you just let the pen go between thumb and index). In addition, the fingers (held between thumb and index, using the medium as an additional point of support) must be used to move the pen when writing, and not to hold it.

A fountain pen should not be used in vertical position, but the nib should be put on the paper so that the lower tip of the nib smears on it. The great advantage of a fountain pen over a ballpoint pen or a roller (that must be used vertically) is that this kind of use allows you to write using very different writing angles, while taking an hand position that is much more natural (you just let the pen go between thumb and index). In addition, the fingers (held between thumb and index, using the medium as an additional point of support) must be used to move the pen when writing, and not to hold it.