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How do I use a worm screw on a Nova chuck?

Discussion in 'Getting Started' started by ernie garcia, Sep 9, 2010.

  1. ernie garcia

    ernie garcia

    Joined:
    Mar 16, 2010
    Messages:
    12
    I'm trying my first bowl. I have a Jet 1014VSI, a Nova Precision Midi chuck, and it's accompanying worm screw. This is also the first time I've used the chuck.
    I can't seem to get the screw started. I used a drill to make a center hole in paduak. When I try to turn the wood blank onto the wood screw with the lathe off, it turns the screw right out of the chuck.
    What am I doing wrong? I used a 3/8 drill bit . Hole is about 1/2".
    ernie
     
  2. Antonio Martinez

    Antonio Martinez

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    May 27, 2010
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    Location (City & State):
    Hershey, PA
  3. ernie garcia

    ernie garcia

    Joined:
    Mar 16, 2010
    Messages:
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    Thanks for the help!

    I got it to work! Two problems: hole not big enough, and I was turning the wrong way.
    ernie
     
  4. Mike Peace

    Mike Peace

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    Glad you got it working.

    The chuck manual calls for drilling an 8mm or 5/16" hole. Also "BEFORE FINAL TIGHTENING MAKE SURE THAT THE FRONT OF THE BOSS SECTION OF THE SCREW IS SEATED BEHIND AND AGAINST THE 50mm JAWS. This will prevent any tendency for the boss section to creep forward when the screw is being used."

    This may be obvious to many but not to me the first time I used it resulting in a couple of thrown blanks. I use the worm screw a lot now.
     
  5. Bill Weaver

    Bill Weaver

    Joined:
    Feb 26, 2010
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    184
    Location (City & State):
    Riverside Ohio
    I have found through trial and error that if you put the wood stock up next to the chuck jaws it will be more stable.
    I like using mine now that i finally figured out what to do....

    Good luck with your turnings.
     
  6. john lucas

    john lucas AAW Forum Expert

    Joined:
    Apr 26, 2004
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    Location (City & State):
    Cookeville TN USA
    Trial and error for the hole size. Some woods require a smaller hole and some larger. The wood should always be screwed in to touch the jaws. However on thin platters I put a wooden spacer between the jaws and wood so the screw doesn't go in as far.
     
  7. JRutten

    JRutten

    Joined:
    May 5, 2004
    Messages:
    69
    Location (City & State):
    Lenexa, Kansas
    Wormscrew

    Where do you live Ernie? One thing about woodturners that I have found is that they are some of the most generous people with their time and knowledge that I have ever met. Do you belong to a local woodturning club? If so, I know some of them have open turning days where you can just bring in a piece of wood and get all sorts of instruction from a lot of amazing and gifted people. Good luck.
     
  8. ernie garcia

    ernie garcia

    Joined:
    Mar 16, 2010
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    No local woodturners club

    I live in ellensburg, Wa--almost the exact middle of the state.
    As far as I know there is no local club. The closest is about 2 1/2 hrs away.
    ernie
     
  9. MichaelMouse

    MichaelMouse

    Joined:
    May 16, 2005
    Messages:
    3,540
    Wetter the wood, smaller the heated and expanded fibers will make the hole seem. Bore, clear, wait a couple minutes and ream.
     
  10. Finn Posner

    Finn Posner

    Joined:
    Nov 1, 2008
    Messages:
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    Location (City & State):
    Turnwater, Washington
    Local clubs

    Ernie - While you might not have a local club, you do have one of the best woodturners in the state, if not the country living in your backyard. Check out this web site: http://donaldderry.com/

    I live over in Olympia and belong to the Woodturners of Olympia Club. I will be in your neighborhood next week on business. I'll be staying in Ellensburg on Monday (9/20) and Thursday night (9/23). If you want to get together give me a call at 360-888-0506.
     
  11. n7bsn

    n7bsn

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    Oct 29, 2005
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    Location (City & State):
    wetter washington
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    Good for you Finn

    Ernie, every July (for the last several years) the Olympia club has run a one-day symposium in July, it has been worth every penny, every year.
     

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