From the 19-teens, this magneto drive shaft uses a bolt as both an adjusting worm and a clamp. https://hmvf.co.uk/topic/39451-another-j-type-on-the-way/?do=findComment&comment=480329 This might be an interesting idea for squaring a single-motor gantry, and 101 other uses around the home.
There is _also_ a vernier coupling, which is something that I have used on preload nuts, where the number of slots in the two parts are different: https://photos.app.goo.gl/zGsMjEiuENhUoxPAA (Yes, there is definitely something wrong with the _execution_ there, but the idea is sound.) -- 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
