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Thread: Knurled nut

  1. #1
    Join Date
    Sep 2008
    Location
    Adelaide
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    151

    Default Knurled nut

    Hi all, I have received and painted my belt covers for the hercus. But one thing I never received was 3 knurled nuts. 2 of them hold on the side cover motor belt cover, and 1 goes on the front cover on the bottom edge to help lift up the cover.
    Does anyone have a sample of these with approx measurements, I could just turn up something that would fit but trying to keep the original look. I think they are made of aluminum.
    Cheers
    Gene

    Holden Hill Crash Repairs
    607 North East Road
    Gilles Plains South Australia 5086
    (08) 8261-3979
    [email protected]

  2. #2
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    Default

    Hi Gene,

    In tomorrow's daylight, will measure up the knurled knobs for you, if I can find them.

    I have bits of restored lathe all over the house.

    Ken

  3. #3
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    Canberra
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    Default

    Footz,
    Where did you get the belt covers from?

  4. #4
    Join Date
    Nov 2006
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    Default Hercus cover knobs

    Gene,

    Attached is a drawing of the knobs you require.

    The rear belt cover knobs look authentic, not sure about the knob for the lift up cover.

    The one on my lathe might be a replacement.

    Perhaps a kind member will see what's on their Hercus, to verify.

    Ken

  5. #5
    Join Date
    Jun 2008
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    minto
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    Default

    FOOTZE I made 2 knurled nuts foe mine which look very similar

  6. #6
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    minto
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    Default

    Nice DRAWINGS the ones I made are the same style out of mild steel and gun blackened

  7. #7
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    Default

    I think imformation such as your drawings is a step in the right direction and exchanging ideas
    Cheers Bernie

  8. #8
    bitza500 Guest

    Default Geez you draw well`

    Hi Ken, what other goodies have you done drawings for as this is Great
    Have you done a drawing for a tool for tighting the handle nuts without damaging them??
    But any drawings you have done please just put one on the forum every once in a while as they are great
    As with most Lathes you have to make something but you need to know what it looks like
    So keep the drawings coming
    all the best Derek bitza500
    [email protected]

  9. #9
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    Default

    You the man Ken

    I can see I need to go interstate and buy you a few beers. You helping out all the time
    By the date on the plans bitza I think ken just draws plans as required. Ken which programme are you using for cad work? I gather ken you do this for a living?
    Thanx , now where do I get info on them dam women LOL
    Last edited by footz; 27th Sep 2008 at 09:48 AM. Reason: edit
    Cheers
    Gene

    Holden Hill Crash Repairs
    607 North East Road
    Gilles Plains South Australia 5086
    (08) 8261-3979
    [email protected]

  10. #10
    bitza500 Guest

    Default Ken can draw we can make

    After seeing such professional drawins and precise measurement I think Ken deserves a pat on the back as the drawings are a BRILLIANT necesity for these old Hercus"s as all the small items that have been gouged lockgrips hammer and chisel or just plain missing
    The drawing he did for the Nuts to hold the slide handles on is a Brilliant piece of work as I have 1 mutilated original and 3 ground up nuts to hold the Handles on now I can remake the nuts to a DRAWING and not a mutilated piece of steel as the Majority of Lathes have normal nuts holding the handles on and as 75% on the Register are restoring that drawing is Priceless
    But I will be making a proper tool to use to fit them or have you a drawing for one KEN ???

    all the best Derek

  11. #11
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    Default Footz

    Real as in actual measurements for the two side nuts knurled are

    3/8 inch from the washer to the step, 3/8 inch wide to the domed top that is 1/16 inch dome.The knurl is 1/4 ich central. The hole is 3/8 inch. There are two of these.

    The front knob is in two parts the front handle is 1 inch diameter, 5/16 inch to step down to 5/8 inch long by 5/8 inch. 1/8 inch threaded piece between front and back.
    The inside metal is 5/8 inch by 5/8 inch with a rubber similar to old dunny seat rubbers
    with the domed recess outside, the 1/8 screw passes from the rubber through a threaded centre in the metal and is screwed in by hand easily from and through the fibreglass cover. The screw therefore holds the rubber stopper in place tight.

    There is no need for a tool to fit the side cover indeed a spring washer could be used with a thinner washer on the side cover is designed to fit by hand.

    I say real measurement since it was made in imperial times.

    All this at great personal cost as the grandfinal was on at this time.

    Regards Peter,
    Last edited by Penpal; 27th Sep 2008 at 05:54 PM. Reason: add one size

  12. #12
    Join Date
    Nov 2006
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    Heidelberg, Victoria
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    Default Tool for tightening domed nuts for hand wheels

    Bitza500,

    I made my own tool for tightening the domed nuts that secure the hand wheels.

    It was simply a 6mm plain washer cut in half, and gripped with a pair of pliers.

    I don't think a drawing is necessary.

    Gene,

    I use Autocad R14, does everything I want without all the padding of the later upgrades.

    Ken
    Last edited by neksmerj; 27th Sep 2008 at 10:21 PM. Reason: Type of software added

  13. #13
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    Adelaide
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    Default

    Wannabe
    I got the covers from the s/h hercus man
    http://www.moyles.com.au/

    Penpal
    LOL I hope your team won!

    Thanx all I will make some out of aluminum today if I get a chance, painted the covers and other bitz looks like I am going to restore a hercus heheh. Dam it sure is looking good. Thats if lathes can look good?
    Last edited by footz; 28th Sep 2008 at 08:29 AM. Reason: edit
    Cheers
    Gene

    Holden Hill Crash Repairs
    607 North East Road
    Gilles Plains South Australia 5086
    (08) 8261-3979
    [email protected]

  14. #14
    Join Date
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    minto
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    Default

    Turning the knurled nuts you need to write your self a simple order of operations for the project.

    1 Chuck the bar needed
    2 Turn major od
    3 Centre drill
    4 Drill for 3/8 tapping drill
    5 KNURL OD
    6 Turn stepped dia
    7 Tap 3/8 thread
    8 Face stepped section to length
    9 Counter drill clearace hole
    10 REVERSE job in chuck
    11 Face to length allowing enough material to fre turn knob radius
    Cheers Bernie

  15. #15
    Join Date
    Nov 2006
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    Bendigo Victoria
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    Default

    As a very new metal worker I found your step by step procedure both helpful and very interesting.

    One question though, on the drawing it shows an outside radius on the knob (R53.5), how do you free turn the radius?

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