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  1. #1
    Join Date
    Nov 2019
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    AU
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    52

    Default Large diameter fly cutter

    Having a crack a making a larger diameter fly cutter

    I didn't have a end mill long enough to reach the bottom of the pocket so I pilot holed the carbide seat then flat bottom ground a drill bit to bore the seat.

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  2. #2
    Join Date
    Nov 2019
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    AU
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    52

    Default

    Making the arbor adapter from an old tractor engine gudgeon pin

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  3. #3
    Join Date
    May 2011
    Location
    Murray Bridge S Aust.
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    71
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    5,942

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    How hard was it to machine the Gudgeon Pin? Have been told that they are very hard on the outer casing. What tooling did you use HSS or Carbide?
    Thanks,
    Kryn
    To grow old is mandatory, growing up is optional.

  4. #4
    Join Date
    Nov 2019
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    AU
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    Default

    Way harder than I expected to cut through the hard casing. Killed one corner on my cnmg carbide just cutting through the outer layer.

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  5. #5
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    May 2011
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    Murray Bridge S Aust.
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    How will you mount it to the flywheel??? I think if it was welded to it, it could be a real problem.
    Kryn
    To grow old is mandatory, growing up is optional.

  6. #6
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
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    Default

    Hi Ajax, Guys,

    I'm watching this thread with interest !

    This is a picture of my "Go To" fly cutter.

    New_Flycutter-1.JPG

    Not quite as big as yours
    Best Regards:
    Baron J.

  7. #7
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    Nov 2019
    Location
    AU
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    Default

    Quote Originally Posted by KBs PensNmore View Post
    How will you mount it to the flywheel??? I think if it was welded to it, it could be a real problem.
    Kryn
    I'm making a spigot out of that gudgeon pin to make up the difference between the ID of the flywheel (41.85) to my iso40 arbor who's OD on the spigot is 22mm. That spigot will be a press fit and I'm intending to use 2 m8 Allen head bolts as drive tags. The center bolt of the arbor with a large washer will clamp the 2 together...
    ..... probably going to be some epoxy involved in that last step.

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  8. #8
    Join Date
    Nov 2019
    Location
    AU
    Posts
    52

    Default

    Quote Originally Posted by BaronJ View Post
    Hi Ajax, Guys,

    I'm watching this thread with interest !

    This is a picture of my "Go To" fly cutter.

    New_Flycutter-1.JPG

    Not quite as big as yours
    That's an awesome example.

    Sent from my CPH1921 using Tapatalk

  9. #9
    Join Date
    Nov 2019
    Location
    AU
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    Default

    Hmmmmmm there will be a delay to this project for many weeks. I may start another thread on the reason as to why.
    It's shed safety related

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  10. #10
    Join Date
    Nov 2017
    Location
    Geelong, Australia
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    57
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    2,651

    Default

    Doesn’t sound good - hope it’s not you that’s damaged.

    Steve

  11. #11
    Join Date
    Nov 2019
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    AU
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    Default

    Deleted

  12. #12
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
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    Default

    Hi Ajax,

    I do hope that that you recover quickly !

    Oxygen bottles due to the extremely high pressure that they contain can do a lot of damage if they are not treated with care. I recall some years ago an oxy bottle on its side screaming down the yard and burying itself into a brick retaining wall when the delivery driver bounced the cylinder off the lorry knocking the valve neck and it breaking off ! Luckily no one was injured. Though I reckon at least one guy got brown undies . We never recovered the valve.
    Best Regards:
    Baron J.

  13. #13
    Join Date
    Nov 2019
    Location
    AU
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    52

    Default

    Reckon I got a pair of undies to match Large diameter fly cutter lol

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