Month's Goal: $300, Received: $100.00 - (33%) Contribute Now
Donate whatever you can or Join the 15,000 other NAWCC members for only $72 (plus $10 for hard copy publications). Check it out here.


NOTICE Notice: This is an old thread. The last post was 1272 days ago. If your post is not directly related to this discussion please consider making a new thread.
Results 1 to 4 of 4
  1. #1
    Registered User
    Join Date
    Aug 2009
    Location
    Harrisburg, PA
    Posts
    484

    Default Recommended Collet Sizes

    I bought a 8mm lathe last year but need some collets for it. I mostly work on pocket watches. What collet sizes would be suitable? I understand there is a list of recommended collet sizes somewhere but haven't come across it.

    Thanks!
    Bruce

  2. #2
    Registered User
    Join Date
    May 2005
    Location
    wisconsin
    Posts
    1,174

    Default Re: Recommended Collet Sizes (RE: bbodnyk)

    Quote Originally Posted by bbodnyk View Post
    I bought a 8mm lathe last year but need some collets for it. I mostly work on pocket watches. What collet sizes would be suitable? I understand there is a list of recommended collet sizes somewhere but haven't come across it.

    Thanks!
    Bruce
    Bruce
    Anything less than a full set from 1-80 will probably be an issue sooner or later.
    For pocket watch repair, I would suggest that you start with #3 through #48. These will probably be your most commonly used depending on how you do things.

    If you plan to make parts from readily available standard fraction size bar stock, you should then have a few common fraction sizes. For pocket watches, I would suggest 1/16", 1/8" and 3/16" bar stock along with matching collets. This will cover items like screws, Arbors, Pinions etc.

    Larger diameters like rachet wheels, crown wheels, barrel covers etc., are best held in machinable pot collets and or self centering chucks.

    Jerry Kieffer

  3. #3
    Registered user.
    Join Date
    Jul 2008
    Location
    Philippines
    Posts
    459

    Default Re: Recommended Collet Sizes (RE: Jerry Kieffer)

    Hi, if I need another collet size I'll just make my own like this brass collet I made when I fabricated a push button of a Tag Heuer Chronograph. It's good to have another lathe like my mini lathe from Sieg.
    Attached Thumbnails Attached Thumbnails collet brass.JPG  

  4. #4
    Registered User
    Join Date
    Jul 2009
    Location
    Kentucky
    Posts
    2,328

    Default Re: Recommended Collet Sizes (RE: le arsi)

    For cutting off balance staffs from balance wheels, I've found that a #6 and #8 will cover a good proportion of the 16 and 18 size watches out there.

    I own a number of accessories-such as balloon chucks and jewel chucks-that fit in a #50.

    While I agree that you will eventually want a full set, for 16 and 18 size watches, I use primarily use in the range of 6-20. This covers me well for balance staff replacement, pivot polishing, and very occasional repivoting.
    Chapter 149

Similar Threads

  1. Commonly used collet sizes?
    By Watchfixer in forum Horological Tools
    Replies: 5
    Last Post: 07-27-2011, 07:25 PM
  2. Collet size conversion tables
    By John Echternach in forum Horological Tools
    Replies: 3
    Last Post: 03-31-2008, 12:46 PM
  3. 8mm Lathe collet sizes.
    By Jeff C in forum Horological Tools
    Replies: 4
    Last Post: 06-08-2007, 12:56 PM
  4. Measuring Collet Size
    By ticktock in forum Horological Tools
    Replies: 2
    Last Post: 10-16-2006, 03:48 PM
  5. collet sizes
    By David Robertson in forum Clock Repair
    Replies: 1
    Last Post: 07-16-2005, 02:40 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •