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  1. #31
    Join Date
    Apr 2011
    Posts
    12

    Default

    Quote Originally Posted by Jigantor View Post
    Hi Just,
    Thermal expansion alters aluminium's dimensions that is for sure. I don't turn all day long or take large bits so my chuck and base plate don't really get hot, but just in case that does happen that is why I made the base plate so it needs some heat to even fit. After that it is just a spacer so aluminium should do fine as my machine does not spin real fast (max is 1600rpm).
    I have never had a 4 jaw chuck so did not think about holding it with the 3 jaw, great suggestion. My 3 jaw and 4 jaw weigh a bit, combined that is a fare old weight being supported by the bearings without the job weight spinning force or tool pressure. Have you ever had yours fly off or just fall onto the bed? What size 3 jaw chuck do you have in comparison to your 4 jaw?

    Ji
    I have several lathes of different sizes and they all attach via cam lock so spinning off isn't a problem. You can turn your 3 jaws around to grip the outside or the 4 jaw. I some times turn for hours at a time.

  2. #32
    Join Date
    Jun 2011
    Location
    New Milford ct
    Posts
    75

    Default make sure you take the Key out

    Never leave the key in the chuck, the shop I work in my buddy "ill Phill" did that and is no longer welcome in the shop.

  3. #33
    Join Date
    Jul 2009
    Location
    Australia
    Posts
    1,031

    Default

    I agree never leave the key in the chuck very bad.
    I was about to load that square hollow section into the chuck & I wanted an in between image. Other than that I never leave the key in the chuck because if you power the unit up the key will fly out.
    Ji
    Grip it and Rip it

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