1. #1
    I have a set of ER32 collets, which are great for 4mm -20mm ...but I now need to hold very small diameter steel rod - like 1.5mm-2mm - is this doable on such mini lathes & if so, which route should I be going to hold the workpiece?

  2. I've turned a short piece of 2mm by clamping it in a 10mm holder turned up then drilled out and cross drilled for a clamping screw. the issue is that any length longer than a gnats will see the rod bend with anything other then the finest of cuts. The solution is to use a steady.

    There is a special tool you can buy for this... from Chronos or others...

  3. The Following User Says Thank You to irving2008 For This Useful Post:


  4. #3
    My preference would be a few small collets ER11 size they start at 1 - 1.5mm

    The Myford gizmo from Chronos would be good for mass production but little flexability in varying the diameter

    The other alternative is a bush that fits in your ER32 and you profile saw cuts to it similar to the ER collets

    Phil

  5. I think the way to use the Chronos tool is you turn up the work holder and bush together as a single piece and drill out, then part the bush off... that way you end up with a matched set of holder and steady bush...

  6. #5
    Quote Originally Posted by irving2008 View Post
    I think the way to use the Chronos tool is you turn up the work holder and bush together as a single piece and drill out, then part the bush off... that way you end up with a matched set of holder and steady bush...
    I think i will have to disagree.

    I see that the brass bush in the photo will have a hole to match the rod to be turned.

    The whole tool will then have to be accurately set on the centreline in height of the tool and the X axis to align the bush with the rod

    Then to get the correct turned diameter the bit is adjusted in the holder using a screw that is just visible at the back of the tool

    Unless you have this tool and know better, that is how it looks to work.

    Phil

Similar Threads

  1. Optimal ballscrew diameter for lathe
    By vre in forum Lathes, Lathe Rebuilding & Conversions
    Replies: 6
    Last Post: 20-03-2014, 02:44 AM
  2. FOR SALE: Sieg C3 Mini Lathe
    By Jonathan in forum Items For Sale
    Replies: 1
    Last Post: 07-05-2011, 06:19 PM
  3. Mini lathes - possible to turn stainless?
    By HankMcSpank in forum Lathes, Lathe Rebuilding & Conversions
    Replies: 27
    Last Post: 03-08-2010, 03:14 AM
  4. WANTED: SIEG C3 Mini Lathe
    By derekm in forum Items Wanted
    Replies: 5
    Last Post: 07-04-2010, 08:35 PM
  5. WANTED: SIEG C3 Mini Lathe WANTED
    By derekm in forum Items Wanted
    Replies: 0
    Last Post: 03-08-2009, 03:02 PM

Bookmarks

Posting Permissions

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