There is a new product out for adjusting reeds and it is called the “ReedGeek.” All of the edges can be used in place of a reed knife. It is safe enough to handle without cutting yourself, but sharp enough to adjust reeds precisely without ever needing to sharpen. Each of the long edges are perfect for flattening the reed table. Three smaller edges are useful in adjusting the rails and the tip. The very edge of the ReedGeek is like having an eraser to take off small particles of wood for balancing.
I have had mine for three months now and I love it. I can adjust reeds faster and more accurately than using sandpaper or my reed knife. I am interested to see if it stays sharp and truly doesn’t need sharpening.