Here's a before-and-after look at a reed plate that has undergone customization.
I spend hours rebuilding and enhancing every aspect of a harmonica as I customize it.
I obtain all parts directly from the Hohner factory in Germany. I don't buy pre-assembled harmonicas because the first thing I would do is take them apart. In fact, I even take apart the parts! A custom harmonica is an instrument that has been rebuilt from the ground up.