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Thread: Repurposing a Torx Bit as a Broach.

  1. #11
    rickmcolorado's Avatar
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    Thanks for posting. This was a great idea and will be using.

  2. #12
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    Nice Work. Your broach could have made a little better cut if you had simply ground the bottom of your Torx bit flat. But if it works, I'm just being picky. Nice seat of the pants engineering.

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    Thanks for this one - nice out of the box thinking!

    Regards,
    Ruaidhrí

  4. #14
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    Thanks guys! I thought about grinding the bit before I did the try out but, it worked just fine as it was so I just skipped that step. If I was pressing this into something less malleable then brass or aluminum a convex grind would probably be beneficial. These materials didn't need it.
    Mark

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    Manitoba Man's Tools

    Broach

    Good great work. I think Tony Foale posted this technique as well. Kudos to both of you for a good solution. Grest pics too Astro.
    Bob

    Quote Originally Posted by astroracer View Post
    Thanks guys! I thought about grinding the bit before I did the try out but, it worked just fine as it was so I just skipped that step. If I was pressing this into something less malleable then brass or aluminum a convex grind would probably be beneficial. These materials didn't need it.
    Mark

  6. #16

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    You're pretty much cold forging the Torx shape into the brass. Good and hard. But seems like a challenge to remove the tool after doing so. Secret?
    Cupping the face converts it to actually cutting the shape. i.e. not as hard, easier to form the shape, and maybe easier to remove the tool after forming.

    Good stuff

  7. #17
    astroracer's Avatar
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    Quote Originally Posted by jimirwin View Post
    You're pretty much cold forging the Torx shape into the brass. Good and hard. But seems like a challenge to remove the tool after doing so. Secret?
    Cupping the face converts it to actually cutting the shape. i.e. not as hard, easier to form the shape, and maybe easier to remove the tool after forming.

    Good stuff
    Had no problem at all removing the bit after forming. Wiggled it a bit with my fingers and it came right out. Really, this worked as easily as I documented it. I don't think it would have made any difference in the result if I had convex ground the tip prior to the forming. It's easy enough to do, try it and let us know what you think.
    Mark


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