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  1. #1
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    Default New Closed Handle Design.

    Recently I posted a preview of the new closed handle design I have been working on.



    The following is a progress update; the handle wood is Tas. Pink Myrtle, and the saw plate is 14" x 2 1/2" below the hardback.

    The garnet shellac finish is still in the early stages of completion.



    The saw plate assembly has only received a rough clean up.



    regards Stewie;

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  3. #2
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    Here is a reminder of the handle shape I worked from to create this new closed handle design. As you can see when you compare the 2 handles, the handle cheek needed redesigning to accommodate a bottom rail.

    Stewie;


  4. #3
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    Hi Rob. Whats your thoughts on the new closed handle design.

    regards Stewie;

  5. #4
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    Yesterday I received a pm from a member of another forum asking if I would send him a scaled drawing of my new closed handle design so he could use it for his own saw making work. I respectfully declined that request.

    Stewie;

  6. #5
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    Quote Originally Posted by planemaker View Post
    Hi Rob. Whats your thoughts on the new closed handle design.

    regards Stewie;
    Stewie, it's hard for me to say more than appreciate the beauty of the piece from this distance though I do note that by thickening the upper arch of the handle you've spread the shearing forces that the wood fibers are subject to over a greater area cross-section. It appears that the open-handle version is slightly more robust in this area, though it may be the lighting or camera angle.
    Cheers,
    Rob
    Innovations are those useful things that, by dint of chance, manage to survive the stupidity and destructive tendencies inherent in human nature.

  7. #6
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    I do note that by thickening the upper arch of the handle you've spread the shearing forces that the wood fibers are subject to over a greater area cross-section.

    Hi Rob. A more accurate description; I have focused on beam strength in those critical areas of the handles shape. You will also note the grain direction is where it needs to be located.

    Stewie;

  8. #7
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    The brass back has been hand shaped; stamped; and secured to the saw plate;

    The handle has received its final coat of garnet shellac; and will be left for 5 days to allow the finish to harden up before receiving a final buff.

    Next on the list is to file and set the saw teeth; 12 tpi; 8* rake angle.

    Stewie;




  9. #8
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    Where the back of the saw plate angles away from the heel of the hardback, a small area of saw plate is normally formed. When mated within the handle mortise this small area of saw plate can cause the hardback to twist slightly as its pushed into the back of the mortise housing. This condition generally causes the toothline to twist out of alignment when mated to the handle. My personal preference is to remove that small area of extended saw plate down to the bottom line of the hardback.

    # The above mentioned is based on the assumption the mortise and saw plate slot have already been checked for proper alignment.

    Stewie;


  10. #9
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    Hi Stewie,

    I occasionally have that happen too when the blade slot becomes misaligned with the back slot. I just start over again.

    Cheers,
    Rob

    Innovations are those useful things that, by dint of chance, manage to survive the stupidity and destructive tendencies inherent in human nature.

  11. #10
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    Hi Rob. Totally agree. Also; the thinner the saw plate gauge, the less tolerance there is to withstand any degree of slot misalignment.

    Stewie;

  12. #11
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    I've also found that the tiniest bit of sawdust at the back of the blade slot can cause deflection of the toothline if it pushes against the inlet portion of the blade, thus cleaning the slot on completion is a must, particularly for the thin blades.
    Innovations are those useful things that, by dint of chance, manage to survive the stupidity and destructive tendencies inherent in human nature.

  13. #12
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    Quote Originally Posted by THUNDERLASER View Post
    good design
    Thanks.

    regards Stewie;

  14. #13
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    Another great saw Stewie
    Well done
    Matt

  15. #14
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    Thanks Matt.

  16. #15
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    The saw teeth have been filed by hand and set. I will give the saw a test run tomorrow on both crosscut and end grain.

    Stewie;




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