Simple aid for turning spheres without a jig

Re: Simple aid for turning spheres without a jig

don stephan

If I am counting squares correctly, looks like the two legs in the triangle diagram are 9.5" on the y-axis and 4" on the x-axis.

For those of us foolish enough to consider trying a larger sphere, Dennis, would you consider calculating the location of a third line on the diagram to make the additional set of flats?

Thanks for sharing your diagram and details.

Re: Simple aid for turning spheres without a jig

Dennis in Southern Oregon

The length of the flats of the 8-sided figure is 0.4142 D. For the 16-sided figure, the length is 0.1989 D. When I get a few minutes, I will update the graphs to add these quantities. I did not mention in the original post that it is sometimes easier to cut tenons on the ends of the sphere to these sizes at each stage rather than trying make pencil marks with the offsets A and B from the corners.