Polish Nib

Scratchiness can also occur if the surface of the tips is a little too rough, or if the inside edges of the tips are a little too sharp. In this case, you can try to make the nib smoother by lightly polishing it. Do not do this unless you have already done the previous steps. Trying to polish a nib with damaged tips or misaligned tines will only make the problem worse. Polishing can be done with very fine grit buff sticks, Mylar, or micro-mesh, but doing so is a very advanced procedure and is not recommended without first doing extensive research and preparation.

One polishing technique that is relatively safe to perform and does not require any special equipment is to use a paper bag.

Find a paper bag or other rough paper surface. With ink installed in the pen, draw figure 8s on the paper using your normal writing angle and pressure. Test the pen on regular paper every few minutes or so. This method can take a while to give noticeable results and might not work with all nibs. Stop if you notice that your nib is digging up paper fibers from the bag—the nib is probably too scratchy to fix using this method, and the paper fibers may clog and damage the nib.