Rose Cutting Frame
Overview
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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.
Figure 361 in Turning and Mechanical Manipulation, vol. 5
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."
More Information
Books and Papers
- Turning and Mechanical Manipulation, vol. 5 - The Principles and Practice of Ornamental or Complex Turning by John Jacob Holtzapffel.
Web Sites
- GPhilPoirier has a snippet of one of these in action on this Instagram posting
Other
- A Pearling Tool is a similar device.
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Disclaimer: eMail comments to me at OTBookOfKnowledge @ Gmail.com. The process of woodturning involves the use of tools, machinery and materials which could cause injury or be a health hazard unless proper precautions are taken, including the wearing of appropriate protective equipment. |