Although the surface of the
micromesh might look harmless it can easily ware down the tipping of your nib.
It is quite possible to entirely remove the tipping material with this abrasive.
Please use care when working on your nibs. The reason we like this material is
that it has a rubberized surface which "rounds up" around the tip, removing
sharp corners. For this reason it is better than other flat surface abrasives
such as the Arkansas stone or mylar discs, which are sometimes used for this purpose.
To read Johns article on smoothing click
here