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Thread: Chuck key

  1. #46
    Join Date
    Apr 2003
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    melbourne
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    69
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    19

    Default

    Hi guys,
    I just want to acknowledge Racingtadpole, who offered to make me a chuck key. Im only new to metalwork after many years at woodworking. His generosity is just terrific and much appreciated. So i just wanted to publicly thank him as i appreciate his kind gesture

  2. #47
    Join Date
    May 2020
    Location
    ACT
    Posts
    27

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    Quote Originally Posted by racingtadpole View Post
    Your thoughts may differ but I see no reason to use anything exotic to make a chuck key from. I made sailors from a piece of mystery metal. Some applications need material like 4140, I don’t see a chuck key being one of those applications. The picture of the one made from square bar chewed by an angry beaver earlier in the thread tends to support this theory
    Racingtadpole I'm just quoting industry standard. It's true that a soft chuck key in a home shop is likely to last longer than in a commercial application. The upside is that a soft key can be easily straitened if bent, whereas with a conventionally made key that is not so easy.
    Regardless, I think you're a generous man to make a new key for Sailor! The world needs more people like you.

  3. #48
    Join Date
    Jul 2011
    Location
    Berowra Waters
    Posts
    149

    Default Mine

    I modified mine too, it works quite well. Should have shortened the ball end though, I’ll do it one day.
    Attached Images Attached Images

  4. #49
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
    Posts
    6,439

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    Hi Chris, Guys,

    Quote Originally Posted by jack620 View Post
    Are chuck keys hardened?
    Not as far as I'm aware, certainly non of mine are ! Now the drill chuck keys, I don't know. I would have to rub a file over them.
    Best Regards:
    Baron J.

  5. #50
    Join Date
    Nov 2007
    Location
    melbourne australia
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    3,228

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    Quote Originally Posted by BaronJ View Post
    Not as far as I'm aware...
    Me either John.
    Chris

  6. #51
    Join Date
    May 2020
    Location
    ACT
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    27

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    Quote Originally Posted by jack620 View Post
    Are chuck keys hardened?
    I really don't want to come across as a smart alec, but I do struggle with misinformation.
    If you do a bit of a survey online you will see that most suppliers mention that lathe chuck heys are 'hardened, or 'induction hardened'. Some of them also mention the material the key is made of (generally a bit vague like 'alloy steel') which points to 3/4 type. Just one example below, but there's dozens of them out there if you want to amuse yourself.

    I have three lathe chuck keys here that I have run a file over, all three are quite resistant to a new sharp quality file. If you google the topic there's a wealth of information out there on what a lath chuck key should be made of, and how it should be hardened (through not case) etc.




    Chuck key.jpg

  7. #52
    Join Date
    Mar 2011
    Location
    Southern Flinders Ranges
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    1,536

    Default

    Misinformation is what keeps forums on the internet alive.. this place is riddled with it on a regular basis..

  8. #53
    Join Date
    May 2020
    Location
    ACT
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    Quote Originally Posted by racingtadpole View Post
    Misinformation is what keeps forums on the internet alive.. this place is riddled with it on a regular basis..
    True that!

  9. #54
    Join Date
    Nov 2007
    Location
    melbourne australia
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    3,228

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    I ran a file over my chuck keys today. Both are soft. Very soft in fact. Unknown provenance; but I think I can guess.
    Chris

  10. #55
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
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    6,439

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    Hi Chris,

    I've just checked the chuck key that came with the 125 mm HBM, that one is as hard as hell, the file just skates over the surface. All my other ones are soft enough to file easily including my drill chuck keys. Though I've only checked the drill chuck ones that I use regularly.
    Best Regards:
    Baron J.

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