Thanks all who answered my guilloche question, especially Ed Colbeth
for directing me to Peter Rowe’s utterly fascinating article.
Peter, if you’re out there, I have one last question: can the
traditional Faberge engraved effect be achieved with a modern CNC
machine (for example, Servo Products with Precise high speed
spindles) as with an old Plante, Hall, or Field engine turning
machine? Or is there a distinct quality to hand work?
Richard Hyer in Chicago, where the wind is so strong, waves are
breaking as tall as the trees.