When flattening rings for segmented bowls, I have been mounting the rings on the headstock of the lathe with a Cole Jaw, and then use sandpaper on flat disc to flatten the rings at low speed. The disc has a handle on the back which allows to me apply even pressure while the sanding. I usually scribble pencil marks across the surface of the ring and sand until they are gone. Although not the fastest method, it has worked really well for me.
The one place where I run into problems with this method is when I try to flatten thin rings, usually less than 1/2” high. The lugs on the Cole Jaw extend higher than the ring preventing me from applying the disc. I am looking for suggestions on how one might flatten thin rings.
The one place where I run into problems with this method is when I try to flatten thin rings, usually less than 1/2” high. The lugs on the Cole Jaw extend higher than the ring preventing me from applying the disc. I am looking for suggestions on how one might flatten thin rings.