Rose Cutting Frame
Rose Cutting Frames are a really interesting fly cutter where the cutter's holder rides along a rosette for it's movement (whilst also spinning).
They are typically used for adding wonderful designs to the end of an object, especially with guilloché work.
Also, miniature cutting heads can be used in place of the fly cutter to allow for deeper cuts (Fred Armbruster developed one).
John Jacob Holtzapffel came to the idea of making a device which would make designs like a rose engine lathe, but would be usable on a lathe with a fixed headstock (as he recorded in 1884 in Turning and Mechanical Manipulation, vol. 5, pg. 328).
It was noted in Norman Tweddle's book, The Rose Engine Lathe, as one of the nine appliances for rose engine turning other than the rose engine lathe (chapter 2). He noted, "My experience with the Rose Cutting Frame was not a happy one and after many attempts to get results that would pass critical examination, I gave up and sold the instrument."
Books and Papers
- Turning and Mechanical Manipulation, vol. 5 - The Principles and Practice of Ornamental or Complex Turning by John Jacob Holtzapffel.
- A Pearling Tool is a similar device.
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