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  1. 26th February 2013, 12:50 PM #1
    DenisPC9
    DenisPC9 is offline New Member
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    Default Starrett Arbor Q

    Greetings

    I am building my own house and have nearly got to stage of having to drill large round holes. Some time ago in a rush of blood to the head, I acquired a Starrett 76mm DPP (?) its the cookie cutter style drill that will cut out a circle of 76mm.

    As the period is rapidly approaching whereby I will have to cut out numerous 76mm holes, I took the plunge and got myself a Starrett A10E Arbor. So far so good. So practice time has arrived and I'll be damned if I can figure out how to separate the various components of said Arbor so I can mount the circular drill to start cutting.

    There is a lack of documentation for us plonkers on how to do it and I am loathe to try NSW's rapidly degrading TAFE system to find a Course in "Getting a Starrett Arbor Working".

    At the sliding base there is a circular clip, which may (or may not) be pivotal in getting this thing to pieces.

    Does anyone have a few more clues than I?

    Cheers
    Denis
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  3. 26th February 2013, 12:59 PM #2
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    Big Shed
    Big Shed is offline Retired Member
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    Default

    There's no need to "separate the various components of said arbor".

    You simply screw the top ring conterclockwise so the 2 prongs are retracted, screw on the hole saw (or cookie cutter if you prefer) then screw the top ring clockwise to lower the 2 prongs in the 2 matching holes in the hole saw, may have to line up said holes to prongs.

    Here's a picture of the arbor with prongs retracted.

    Starrett A10E Quick-Hitch Arbor with Extra Length HSS Pilot Drill Fits Hole Saws: Amazon.co.uk: DIY & Tools

    and here's a pic with the prongs extended

    Starrett STRA10E A10e Arbor To Suit 32mm-152mm Holesaw | eBay

    Insert in drill and cut your holes.
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  4. 26th February 2013, 01:15 PM #3
    DenisPC9
    DenisPC9 is offline New Member
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    Default

    [QUOTE=Big Shed;1615982]There's no need to "separate the various components of said arbor".

    You simply screw the top ring conterclockwise so the 2 prongs are retracted, screw on the hole saw (or cookie cutter if you prefer) then screw the top ring clockwise to lower the 2 prongs in the 2 matching holes in the hole saw, may have to line up said holes to prongs.


    Damn! That means I will have to do something constructive this afternoon ;-)

    Thanks for that, I didn't see the thread inside due to the paint etc.
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