What should not be done to remove excess ink from the pen point?

Dipping the pen tip in an ammonia solution should not be done to remove excess ink from the pen point because ammonia can be a harsh chemical that may damage the materials of the pen, including the nib and other components. This method poses a risk not only to the integrity of the pen but can also lead to adverse effects on the ink itself, potentially altering its pigmentation or consistency.

The other options are safer and more effective methods for managing excess ink. Tapping the pen gently on a paper towel allows for controlled removal without risking damage. Blotting the pen tip with a cloth is also a gentle way to absorb excess ink without affecting the pen. Wiping the tip on a dry surface can help remove ink effectively while being less invasive than chemical solutions. Each of these alternatives provides a practical approach to maintaining the pen and ensuring it functions optimally without the hazards associated with ammonia.