Nichel,

I realized I had not posted the link to the Woodwright's video of their 
use of the ellipsograph.  Perhaps folks hadn't seen it.  My ellipsograph 
was made to be similar.  Check the video starting at about 3 minutes, 30 
seconds.

https://video.unctv.org/video/holly-wood-spectaculars-6p5efs/

Bill W.
Nottingham, PA
Woodworkers visit me at http://billwebber.galootcentral.com/