An Ellipse Chuck is used to make oval parts. It is sometimes called an elliptical chuck or oval chuck.
Examples of this device in use
- This YouTube video, Holtzapffel No. 2410 Ornamental Turning Lathe with an elliptical (oval) chuck frame turning a Red Mallee shows an ellipse chuck in use.
- Dale Larson shows how to turn an oval bowl in this YouTube video.
How it works
- David Springett (author of Woodturning Wizardry) describes this device best in this video.
- This YouTube video, Elliptical Turning: An Introduction presented by David Springett is quite good.
- Wes Pilley made one and showed pictures along the way on his Instagram page.
This is not a project that I would recommend for the weekend machinist.
- John Edwards' web site, OrnamentalTurning.co.uk, really does a far better job explaining these devices than I could ever do, and there is also a lot of great information there which is worth reading.
- Understanding the historical devices really helps make one far better at understanding and using today's rose engines. The newer designs for devices like a spherical slide still draw much from what was done more than a hundred years ago. And this is why so many books that were written up to 200 years ago are referenced in the Books section.
- 3D Printed Ellipse Chuck (YouTube video) by PT.
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.