Tailstock drill chuck,,, you probably have one already

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Thread: Tailstock drill chuck,,, you probably have one already

  1. #11
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    Quote Originally Posted by Ray7756 View Post
    Bob I bet I have done more stupid chance taking things than you could imagine
    Ray
    Yebbut I've got more miles on the clock than you so betcha I'm still ahead.

    Bob

    Ever tried. Ever failed. No matter. Try Again. Fail again. Fail better. (Samuel Beckett)

     
     
  2. #12
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    Some discussion in this Pi.....g competition. When I drill bullets I use the special ground drills for brass with success . Not all tail stocks are hollow to use a draw bar.

    Peter.
    Nil Desperandum

     
     
  3. #13
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    My morse taper drill chuck doesn't have a drawbar Peter but not a problem as the bullet case is firmly held in the scroll chuck so if the drill bit did catch it's not really a problem. I hold the smooth part of the chuck as I withdraw it which I know is frowned upon so would say very clearly that I do not advise others to do likewise, I'm aware of the risks and am very careful.

    I have absolutely no issues drilling with sharp, good quality HSS drill bits but it's not difficult to regrind angles specifically for brass or buy bits ready ground, I just dont see the point tbh. You're drilling through just a few mm not great chunks of the stuff after all. A different matter if I'm drilling a thick piece on my little metal lathe.

    cheers
    Bob
    Bob

    Ever tried. Ever failed. No matter. Try Again. Fail again. Fail better. (Samuel Beckett)

     
     
  4. #14
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    COOPER 01/08/1998-31/01/2012

     
     
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    If you are drilling through a thin layer of copper or brass or a thick amount of copper or lead in some bullets it sure is easy with the brass bits.

    Peter.
    Nil Desperandum

     
     
  6. #16
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    I have four drill chucks, two on MT3 arbors for use in my milling machine and another two on MT2 for lathe use. None of the arbors are threaded for a draw bar. If I wanted to drill a bullet I would use one of my collet chucks.

    Bullets can be made from a variety of materials but I’ve not seen a brass one?

     
     
  7. #17
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    ER 2 collets and chuck are cheap enough, so are ER 32, get a bit pricey if you go to ER 40.

    COOPER 01/08/1998-31/01/2012

     
     
  8. #18
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    ER32 is a good choice for modest size machines. I have ER32 chucks for my metal lathe, milling machine and wood lathe.

     
     
  9. #19
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    ER 25 collet Range 1 - 16mm
    ER 32 collet Range 5 - 20mm
    ER 40 collet Range 3-26mm

    COOPER 01/08/1998-31/01/2012

     
     
  10. #20
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    ER32 collets commonly start at 2mm and ER40 at 3mm.

    ER Collets - Arc Euro Trade

    The maximum bore of my lathe is only 20mm so it made sense for me to go for ER32. If you have a large lathe ER40 May be a better choice.

     
     

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