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Thread: Fly Cutter Attachment for Lathe Faceplate

  1. #11
    garage nut's Avatar
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    Need to square off some 30 x 30 mild steel I want to use for a power hacksaw project

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    Quote Originally Posted by garage nut View Post
    Need to square off some 30 x 30 mild steel I want to use for a power hacksaw project
    There is a mysterious entity in the HomemadeTools.net wheelhouse. He senses issues we have with projects, and he brings out related posts. This appeared today...... http://www.homemadetools.net/forum/s...-17#post102983

    How this mystery started is unknown, but is growing to legendary proportions, and we minions have all the fun.
    Kinda like Santa Claus.......

    I forwarded the cutting disc in angle grinder post to garage nut; unaware 30 x 30 was square bar stock. My picture was a sheet of plate, lol.
    Last edited by Toolmaker51; 11-30-2017 at 09:10 PM. Reason: It's always something...
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    Toolmaker51
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  3. #13
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    Quote Originally Posted by garage nut View Post
    Need to square off some 30 x 30 mild steel I want to use for a power hacksaw project
    I assume you are using a lathe for this, if so its a classic use of a 4 jaw chuck.
    U tube is the place to go for machining tutorials, example

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    Paul Jones (12-08-2017)

  5. #14

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    Toughness maybe. Or hardness.
    Quote Originally Posted by mklotz View Post
    Depending on the stiffness of the steel
    But Youngs modulus tells us that pretty much all steels are pretty much the same "stiffness"

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    Captainleeward (12-01-2017)

  7. #15
    mklotz mklotz's Avatar
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    Quote Originally Posted by 12bolts View Post
    Toughness maybe. Or hardness.But Youngs modulus tells us that pretty much all steels are pretty much the same "stiffness"
    True, but I was referring to the stiffness of the shape, not the material. Since I used a C-section, I was concerned about it deflecting while cutting. A stiffer shape would be better.

    I probably should have worded it more clearly.
    ---
    Regards, Marv


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  9. #16
    Toolmaker51's Avatar
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    re questions about tool form.
    Fly-cutters skim, so avoid a too-negative leading edge that pulls into the work. The face does most of the finish shearing, a radius or angled leading edge 'roughs' stock a few turns ahead of that.
    A successful turning tool is not too far from a good fly-cutter.
    As a side note.
    Occasionally, I need minimal tool marks in a recess. I grind 1 flute off a new & proper diameter 2 flute end-mill.
    Voila! Mini fly cutter.


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