Rippled or waveform moldings (French – moulures ondees), also called flame moldings (German – flammleisten and wellenleisten), have been used in furniture and picture frames since the early 17th century. Reportedly invented in Germany, they rapidly spread to other European countries. They are popularly associated with Dutch baroque frames, especially when executed in ebony and ebonized fruitwoods. Devices for making these moldings all use a pattern and follower system to duplicate a waveform onto a stock piece. The device that is discusses in this article was closely based on the engraving and description in Joseph Moxon’s Mechanick Exercises of 1678-80. Details of construction and use of this reproduction Waving Engine (as Moxon called it) are given, along with examples of finished moldings and frames illustrating the tool’s versatility. Scattered published descriptions of this technology show a gradually increasing complexity of the devices from the 17th century to the present. This gradual replacement of a highly skilled operator using a simple device, by a complex machine that can be run by an unskilled operator culminating in the almost complete removal of an operator in the 20th century, illustrates larger trends in craft and woodworking over the last few centuries.