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  1. #61
    Platinum Member
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    Oct 2010
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    578
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    WI
    Tractor
    '13 Yanmar Lx4100

    Default Re: annular cutters: a better way to drill big holes in thick steel

    Quote Originally Posted by Dongerosa View Post

    I bought one of these, only issue is the max depth for the chips to clear is about 1/4". Now thats not a terrible thing as you can always flip the workpiece and use the pilot to go 1/4" more into it and still have a pretty clean hole. They work really well, something a hole saw would never touch.

  2. #62
    Silver Member Todd727's Avatar
    Join Date
    Apr 2012
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    215
    Location
    Holly Springs, MS
    Tractor
    Case CX90, IH 1086

    Default Re: annular cutters: a better way to drill big holes in thick steel

    Quote Originally Posted by puckgrinder85 View Post
    I bought one of these, only issue is the max depth for the chips to clear is about 1/4". Now thats not a terrible thing as you can always flip the workpiece and use the pilot to go 1/4" more into it and still have a pretty clean hole. They work really well, something a hole saw would never touch.
    That sounds like the CT5

  3. #63
    Veteran Member sparc's Avatar
    Join Date
    Oct 2011
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    1,046
    Location
    NJ
    Tractor
    JD 4410, NH TC-25, Bobcat M610, JD X534, Dig-It Model 158

    Default Re: annular cutters: a better way to drill big holes in thick steel

    Quote Originally Posted by dfkrug View Post
    I just checked out your link and see the Hougen arbor for 1/2" Jacobs chucks
    that you mentioned. What did it cost you?

    Back when I started this thread, I wanted only a Morse Taper arbor, but I can
    see that an arbor for a portable drill can be very handy. I did not see one
    when I was looking and when I bought my Champion bits. With a large
    hand drill, you can go very slow, and really flood the area (if outside) with
    coolant. My geared head 1/2" hand drill is a wrist-buster.

    If a Jacobs chuck arbor costs anywhere near what I paid for my MT3 arbor,
    I would consider getting one.

    I just completed a bunch more 3/4-7/8" holes in 1/2" plate. Sweet.


    Sorry it took so long for me to get back on this. I have not followed the thread and just looked at it by chance this evening.

    The adapter was about $45 IIRC, but its been a few months and I could be off by 10 bucks or so.

  4. #64
    Silver Member
    Join Date
    Feb 2013
    Posts
    104
    Location
    southwest VA
    Tractor
    Ferguson TO-30

    Default Re: annular cutters: a better way to drill big holes in thick steel

    Hougen RotaCuts are great if you don't have to do anything super-thick:

    RotaCut Sheet Metal Hole Cutters

  5. #65
    Super Member mjncad's Avatar
    Join Date
    Aug 2006
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    5,114
    Location
    In the civilized First World
    Tractor
    A couple

    Default Re: annular cutters: a better way to drill big holes in thick steel

    Neat, thanks for the link.
    Paraphrasing Douglas Adams - So long and thanks for all the bacon.

  6. #66
    Silver Member
    Join Date
    Feb 2013
    Posts
    104
    Location
    southwest VA
    Tractor
    Ferguson TO-30

    Default Re: annular cutters: a better way to drill big holes in thick steel

    Just to give an idea of price on the RotaCut sets, I paid $85 for the small set and $185 for the large set back in 2012. I don't think they had the master set out then.

  7. #67
    Bronze Member JamesH's Avatar
    Join Date
    Apr 2006
    Posts
    63
    Location
    Paola, KS
    Tractor
    JD 4300

    Default Re: annular cutters: a better way to drill big holes in thick steel

    For those interested I also started using annular cutters last year. I bought a set of cutters at the AG show and use them in my table top mill/drill. While it would have been possible to put the cutter in an end mill holder I ended up buying a Jancy arbor from Amazon. It is an R8 arbor with coolant capability. It works real slick and the steel cuts like butter.
    JD 4300 w/FEL, 6' LP Finish Mower, 6' LP Rear Blade, 5.5' LP Box Blade and Carryall.

  8. #68
    Elite Member dfkrug's Avatar
    Join Date
    Feb 2004
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    4,904
    Location
    NorCal
    Tractor
    05 Kioti CK30HST w/ Prairie Dog backhoe

    Default Re: annular cutters: a better way to drill big holes in thick steel

    Quote Originally Posted by JamesH View Post
    It is an R8 arbor with coolant capability. It works real slick and the steel cuts like
    butter.
    If you use them with the center coolant, they are even more impressive than the way I use them (above). AND
    you can run them at fairly high RPM.

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