On Mon, 18 Nov 2019 at 03:52, Gene Heskett <[email protected]> wrote:
> I suggested that the jewelers usually have an expandable tapered arbor, > and a collet of sorts that can adjust a ring, cold, by about a size, > more if heated. https://www.cooksongold.com/blog/equipment-technique-focus/how-to-resize-a-ring > But what about my ER42 kit? It ought to be able to do this compression to > restore a decent fit, or would I wreck the ER42's ball bearing nut > trying to put that much squeeze on the ring? I think it would work, but might alter the profile. I think a better way would be to machine the required half-profile of the new size into a piece of bar on the lathe, then push the ring in, flip and repeat, like the commercial ring shrinking tools. But, then, I doubt that a jeweller would charge much for the service. (My sister is a jeweller, I have asked here whether she would squeeze or cut-and-shut. But as she is in the UK she is no help to you) -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1912 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
