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Creata pagina con "Usually the tip of the nib is realized melting directly on place an iridium ball (or equivalent material), and then is cut in two dividing the tip in the two ''tines'', f..."
Usually the tip of the nib is realized melting directly on place an iridium ball (or equivalent material), and then is cut in two dividing the tip in the two ''[[tines]]'', for the realization of the ''[[slit]]'' through which the ink coming from the feeder, necessary for the [[operation]] of the fountain pen, must pass and suitably smoothed to offer a better fluency. In general then, both to allow the air to escape from the conductor and to reinforce the end of the wing cut, the nib is equipped with the so-called "aeration hole", even if in many cases the only purpose is that of greater mechanical strength and flexibility. Some nibs also, such as the [[Triumph Nib]] of the [[Sheaffer]], or the central nib of the [[Omas 361]], are specially designed and machined to write from both sides, including therefore also the so-called [[dry side]].