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Thread: Piercing saw and blade size question

  1. #1
    Join Date
    May 2010
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    1

    Default Piercing saw and blade size question

    Hi, could someone please explain why the fixed frame piercing saws say they accept blades 150mm long and all the piercing saw blades say they are 130mm long. They obviously fit each other but why do the measurements imply the blades are too short for the saw frames?

    Thanks.

  2. #2
    Join Date
    Dec 2009
    Location
    Central London
    Posts
    8,242

    Default

    Hi, Heidi,
    I suppose because people who write catalogues arent paid to ask questions. I rushed straight to my Cook Book and note that Cookies did not fall into that trap. I think you will find that although the frames measure 150mm, their jaws are closer together. Also jewellers have permanently deformed chests from pressing the frames together. It's pelting with rain here in London, so we have all the time in the world to consider these conundrums. Kind regards, Dennis.

  3. #3
    Join Date
    Jul 2009
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    Rye Foreign, East Sussex
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    i've never even thought about their length as i have one of those adjustable saws. Sometimes my thickness just baffles me lol
    Su' xx

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  4. #4
    Join Date
    May 2010
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    7

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    I have a Hegna machine which is a very accurate metal working and piercing saw. Do jewellers here prefer hand saws? I suppose that the dust is lost but I use mostly copper and brass so do I care. If it was gold I bet I would use a hand saw too!

  5. #5
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    Jul 2009
    Location
    Cornwall
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    I've never heard of a Hegna machine. How does it work?

  6. #6
    Join Date
    Jul 2009
    Location
    cotswolds
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    Perhaps a Hegner fret (or scroll) saw?

  7. #7
    Join Date
    May 2010
    Posts
    7

    Default

    It's a horizontal fret machine. Drill a hole through the work, pass a blade through and fix the blade. Foot controls the speed of the cut so both hands can lead the work. I don't know the url but google hegna. It's a German made thing and very good. Very precise vertical cut if you don't hurry the blade.

  8. #8
    Join Date
    Dec 2009
    Posts
    30

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    Better results from googling hegnER as george spelt it

  9. #9
    Join Date
    Jul 2009
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    Cornwall
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    Those Hegners look good. Do they cut steel?

  10. #10
    Join Date
    Jul 2009
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    cotswolds
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    Quote Originally Posted by caroleallen View Post
    Those Hegners look good. Do they cut steel?
    With the right blade, no problem Carole

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