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  1. J

    Sherline Sure

    Shutterbug I am very familiar with Unimat Lathes and have four in my Tool collection. They were very interesting when introduced and of course I had to have one, While quite Versatile, they do have their issues and challenges. However, life with these machine can be a little...
  2. J

    Sherline Sure

    Muenster The use of boring bars is covered in the Sherline Manual that comes with the lathe. However, If you once use a boring bar, you will never use a dremel bur for the same purpose. Boring bars will machine a hole to the center of spindle rotation. Another words if a particular...
  3. J

    Moseley Conoidal Collet

    If you're Conoidal collets fit and tighten properly in your Moseley lathe, you then have a conoidal spindle profile even though it may a appear as a straight taper. If not it would be a first for me. Conoidal collets will not fit in a WW, or 8mm spindle but WW collets will work perfectly...
  4. J

    Sherline Sure

    Muenster Thats a good question. Sherline makes a tool post (first photo) with a 3/8" hole designed to hold standard 3/8" shank boring bars. However, these boring bars are generally to large for horological work. A far more practical and accurate selection is available with 3/16" and...
  5. J

    Elgin 291 7j Balance Staff Replacement

    If for some reason I needed a special jewel setting, I likely would not machine on the original but rather catalog it for future use since its application is known. Over the years I have collected several containers of unmarked jewel settings that I occasionally sort through and on rare...
  6. J

    Loose KWM Bushing

    John Since you are using a bushing machine, the reamer will normally ream a hole identical to the diameter of the reamer. The reason being that reamers in a bushing machine are typically a loose fit and are permitted to find their own path. This is unlike say a drill press where...
  7. J

    Eccentric bushings, but no slots

    Jeff Its anyones guess as to why anyone would do this sort of thing, but Over the years, I have only seen a couple of movements bushed in this manner. The Idea may have come from a publication I read many years ago where a similar repair was suggested. In this case the bushings were off set...
  8. J

    Broken screw in pocket watch winding arbor

    I am late on this but have been at a trade show. It is more than likely both the arbor and screw have been hardened to some degree or other. These screws often have very thin heads and are very weak where the slot intersects with the screw body and typically snap off in half's in that...
  9. J

    Brass Verge rod breaks when bending

    Having done both Video and classroom, I would agree that videos may be the only option for a very few. However, your also correct in the hands on must be experienced to be understood. Even more important, is the interaction among students and how each shares their perspective on each...
  10. J

    Brass Verge rod breaks when bending

    Bill Log on to the NAWCC home page. Click on "Shop" top right side of the page. Click on "Instrutional videos left side of the page. You can also call headquarters in regard to the resumption of in person workshops that were suspended because of the virus. Jerry Kieffer
  11. J

    Brass Verge rod breaks when bending

    Bill Not to be negative, but I suspect that the last thing you need is more Harbor Freight tools. In post #10 Glen has offered some excellent advise and as others have suggested, annealing may get you though this time around. However, this may not be the case in the future where proper...
  12. J

    Temper a small click spring?

    Glen You are correct in that the metals we all encounter will have no effect if quenched after tempering. Since I used the word "generally" in post #4, I should explain. I occasionally do some micro machining for a local University where they always for whatever reason explain the technical...
  13. J

    Temper a small click spring?

    Micheal Quench to harden but generally not after tempering. Jerry Kieffer
  14. J

    Temper a small click spring?

    Michael When making springs, I would suggest that you purchase annealed steel stock of a formulated alloy designed to make springs. A metal supply house can counsel you on your purchase and supply both the material and hardening/tempering procedures for that exact material you purchase. In...
  15. J

    Techniques for straightening watch pivots

    Skutt Yes, however in order to run true the bend must terminate at the entry point of the collet holding it. If unsuccessful, additional attempts can be made. For watch size parts, it is easy to bump the part further than is required, just take it very easy the the first...
  16. J

    Techniques for straightening watch pivots

    Skutt This is a good point. Not all pivots should or can be straightened but if your procedure only takes a few seconds you have nothing to loss. In lesser quality movements, pivots are normally of lower quality materials and are generally to soft or brittle hard. In either case, I...
  17. J

    Techniques for straightening watch pivots

    Personally I have not had good luck straightening pivots with commercial tools designed for the job nor suggested methods from publications. These methods tend to suggest bending a pivot in a single direction applying a lot of abrupt stress in a small area. However if the bend takes place...
  18. J

    BUSHING WITH A SHERLINE MILL

    I would suggest when purchasing a 1/4" and larger Albrecht chuck, that you purchase the chuck with 3/8 x 24 threaded mounting and use Sherlines MT-1 threaded mounting arbor that incorporates the draw bar. Jerry Kieffer
  19. J

    BUSHING WITH A SHERLINE MILL

    Greater than you could imagine including the price. Jerry Kieffer
  20. J

    Making screws to fit existing threaded holes

    First, the kind words of confidence by others is much appreciated, but now if I were only up to the task. I have been down this road many times over the years and in some cases no two threads are the same pitch even in the same movement. Under these conditions, it is occasionally practical to...

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