Epicycloidal Cutting Frame

Epicycloidal Cutting Frames (sometimes called a Geometric Cutting Frame) are ridiculously complex cutting frames that are basically the merger of an Eccentric Cutting Frame with a Geometric Chuck, taking them to a new level.

Epicycloidal cutting frames are typically used with for adding designs to the end of an object, especially with guilloché type of work. Also, miniature cutting heads can be used in place of the fly cutter to allow for deeper cuts (Fred Armbruster developed one).

The best reference for these is Turning and Mechanical Manipulation, vol. 5 - The Principles and Practice of Ornamental or Complex Turning (1884), but Holtzapffel also wrote this document : Notes on the Epicycloidal Cutting Frame.

On the complexity scale, they fall into:

  1. Eccentric Cutting Frame
  1. Elliptical Cutting Frame
  1. Rose Cutting Frame
  1. Epicycloidal Cutting Frame

Picture courtesy Jon Magill

peterwgilroy has a great snippet of one of these in action on this Instagram posting.

This one came with a box to hold all the parts !
Picture courtesy Jon Magill

Just getting started?
You can delay getting one of these. Frankly, unless you have the need for one, you could make a load of stuff never having one of these. But, they can be used to make some really cool stuff!

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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.