If you happen to have technical difficulties, this video is also posted on YouTube and FaceBook. But it is best right here.
While I have demonstrated turning spheres several times both in clubs and in videos, it seems that the internet needs a refresher. It seems that way too many people think that a sphere jig is the only way to turn a perfect sphere.
I completely disagree. While a sphere jig looks neat and cuts a perfectly round sphere–mostly. It leaves a nasty tenon and still requires sanding and often, much more. Even worse, a jig does not provide fundamental skill development that can be used in many similar projects.
Therefore, I decided to shoot a new video focusing on the basic process to turn a sphere without any jig. My process uses the octagon technique to rough turn a sphere and some simple cup faceplates.
Frequently, in future videos, I will undertake additional projects the either extend or derive from a sphere.
While I explain the process in the video, there are two key factors that are important to the process:
The length of an octagon’s side is 0.414 times the diameter of a cylinder containing the sphere.
Assuming the cylinder length is also equal to the diameter, the distance from the cylinder corner to the corner of an octagon is 0.293 times the diameter. Store these factors in a note on your phone – they are valuable.
This sphere is about 3 inches diameter from plum and finished with beeswax and mineral oil.
Enjoy.
p.s. Would you like a more in depth demonstration? Please contact me for an IRD (Zoom Demo) on this or other topics.




