Here's some before and after pictures of some sandwich knives used at our deli. As you can see in the second picture, the handles where sort of nasty looking. I did a quick job of replacing the handles. Only three of the four made it into the "after" picture because one was back in service before I could take the picture. The new handles came from a scrap of wood that I'd had around for years. It was labeled walnut, but given the color I can't help but wonder if it was English walnut. The shapes were rough cut on the bandsaw, and then the final shaping was done mostly by hand using files and rasps. The finish is a home brew of mineral oil and bees wax.