It would not be possible to summarize Shapiro’s in-depth lecture on the history of engine-turning in this article, but a brief refresher is worthwhile. Engine-turning (guilloché in French) is the technique of using a specialized tool to cut geometric patterns into a workpiece. The rose engine machine is the most well-known tool for engine-turning, while the straight line machine and brocading machine are used as well. Engine-turning was invented in the 16th century, with the first engine-turned watches appearing in the late 17th century. Breguet was instrumental in popularizing engine-turned dials which continued to be seen in high grade watches until the advent of the quartz watch in the 1960s. George Daniels was responsible in part for the resurgence of engine-turning, with other contemporary engine-turners such as Derek Pratt, Roger Smith, Kari Voutilainen, Roland Murphy, and Brittany Nicole-Cox following suit.
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