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  1. #31
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    Quote Originally Posted by Corneel View Post
    I'm lucky, probably. There is a metal supplier with a huge selection in the town where I work (Rotterdam). They are not particularly cheap, but better then unavailable. Spring steel I get from ebay in Germany, it's difficult to find that stuff in small quantities.

    A picture of the hammers I use, and my new saw smithing anvil. The hammers are simple sledge hammers, but I eased the corners a bit on the bandsander. The "anvil" is a piece of scrap. In a harbour town, one mans offcut is another mans sawsmithing anvil. That Thor hammer looks like a very usefull tool, I'll check if I can find something similar with enough heft.

    Attachment 296830

    Can't see real well. But you might save your self some work if you polish the faces of the hammers. Metal workers hammers are all highly polished on the faces. This way you don't add in any unnecessary texture. I wonder what a pebbled spine would look like if you dimpled the whole surface evenly with a small ball pien.
    …..Live a Quiet Life & Work with your Hands

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  3. #32
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    Jun 2009
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    Holland
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    Yes, that's a good idea. But I make enough dents because of my clumsy hammering technique, to not to worry too much about some scratches.

  4. #33
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    This is all very interesting
    Haven't posted for a awhile family health issues
    But it is nice to just unwind here for a bit

  5. #34
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    Perth
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    I made a saw back from brass angle but I had to anneal it twice to get it to bend completely over.
    I used my 400 mm long wood work vice to bend it which also kept it straight.
    Then I pounded it with a small lumpy and did not have a problem keeping it straight.
    Now that I have a mains gas powered forge I should give that a go - main problem with it is that it is too hot and low temp control is not that easy.

  6. #35
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    Maybe BobL can answer this ... given you want sorta small quantities ... what is the possibility of melting the brass you can get and changing the alloy %s ?

    What needs adding? Copper?

    Thanks,
    Paul


  7. #36
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    Quote Originally Posted by pmcgee View Post
    Maybe BobL can answer this ... given you want sorta small quantities ... what is the possibility of melting the brass you can get and changing the alloy %s ?
    Err . . . . in the time that it takes to melt and cast the new alloy you'd have annealed and made about a dozen backs from bar or plate.

  8. #37
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    Quote Originally Posted by BobL View Post
    Err . . . . in the time that it takes to melt and cast the new alloy you'd have annealed and made about a dozen backs from bar or plate.
    Adding a bit of Cu (there's about 5% more in gun metal than the stuff we've been talking about) would present no problems. But how do you remove the lead & Aluminium, which are what give it its (for our present purposes) undesirable properties???

    Cheers,
    IW

  9. #38
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    How about a copper spine?
    "Life would be infinitely happier if we could only be born at the age of eighty and gradually approach eighteen."

    Mark Twain

  10. #39
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    Quote Originally Posted by TobyC View Post
    How about a copper spine?
    It is being offered in production. It wouldn't be as rigid as brass I suspect but probably still rigid enough.
    As you can see below the different materials used for the spines come in different thicknesses. I would guess that is to compensate for the hardness and get a uniform rigidity.

    Copper can look nice. I think it oxidises quicker than brass.
    …..Live a Quiet Life & Work with your Hands

  11. #40
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    Quote Originally Posted by TobyC View Post
    How about a copper spine?
    Copper is much more expensive than brass. With the spine material choice on Bad Axe Backsaws, Copper is near twice the cost of brass, and Bronze is twice the cost of Copper and 4 x the cost of brass.

    Ultimate tensile strength - Wikipedia, the free encyclopedia


  12. #41
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    Nice, especially after it turns brown.

    Would that be a useful alternative for you fellas in Australia? Cheap, easy to find, and easy to work?
    "Life would be infinitely happier if we could only be born at the age of eighty and gradually approach eighteen."

    Mark Twain

  13. #42
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    I had that thought about copper too, Toby.

    But seeing the Bad-Axe choices reminds me how nice Bronze is.

    I like that.

    Paul.

  14. #43
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    Yeah, I saw that bronze one too, good stuff! yellowyes.gif
    "Life would be infinitely happier if we could only be born at the age of eighty and gradually approach eighteen."

    Mark Twain

  15. #44
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    First - this guy has several pages - one is a summary/article, and was the only one I had read before just now.
    (he mentions taper grinding ... but no details!)
    This link is to making his own medallions.
    Handsaw maker: Medallions design and fittings.


    But regarding folded backs ... I just noticed the Kenyon saw CS wrote about in 2008.
    Is this a trick of the camera, or an artifact of how it was bent?
    It seems one side is thinner.
    I


  16. #45
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    I just realised these saw handles I made in 2008 also have folded brass angle backs.

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