As a professional tilesetter, I’ve occasionally used a grease pencil to mark my cuts. But I prefer another marker. My favorite is an aluminum knitting needle, which will leave a legible mark on all but the glossiest porcelains. And unlike the grease pencil, it leaves a very precise line. When the needle dulls, I sharpen it with a file, a sander or a grinder. I’ve been using the same needle for over 20 years, and I haven’t begun to wear it out.
Ken Morrill, Corralitos, CA
