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Type: Posts; User: Jim Hilburn

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    Re: Bridge "leaning" toward peghead

    What type bridge is it? Is the lean mostly the saddle or the entire bridge? There are many imported bridges with extra wide saddles and very sloppy adjusting thumbwheels. These bridges really like to...
  2. Re: Which higher priced F style models have solid wood scrolls?

    Basically all scrolls on all F mandolins are partially solid and partially hollow. Or I should say 99.9 %.
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    Re: Recommendations for a ruined(?) finish

    I haven't used it but theres Bullseye dewaxed shellac in a spray can. It has some positive luthier reviews. Could be a good way to seal without any chance of finish disruption.
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    Re: Recommendations for a ruined(?) finish

    This is my #22 which became my main mandolin for about 17 years. I don't remember why but I was unhappy with the first sunburst attempt and sanded it back. I think I did that twice. I was convinced...
  5. Re: quick question about a stew mac straight truss rod

    Wrnch, the low in the middle trussrod design was patented by Leo Fender. I'm not sure what Gibson does now but the curved rod anchored low in the tail was what they used on early guitars.
    But to me...
  6. Re: quick question about a stew mac straight truss rod

    Haven't looked at this for a while. Also includes the 7/8" deep at the nut neck without the fingerboard. Only 1/4" too much. You can see where I penciled in a more realistic profile.
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    Re: Lacquer for first mandolin?

    https://www.youtube.com/watch?v=K9V6CyA8_K4

    This is what I've used to hold instruments for 20+ years.
    The video is of me doing a lacquer finish using it. Good idea to hit the mute button.
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    Re: Lacquer for first mandolin?

    I built a mandolin in 1979 and had Mike Kemnitzer do the lacquer finish on it because I though instruments were always finished in lacquer. I had no idea that pre 1925 including Loars, some other...
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    Re: safe removal of inlay to be routed

    Depending on how delicate the inlay is I'd be very careful about prying on it.
    Doesn't help now but I aways used Duco for this. Then I would patiently soak with acetone till it came loose.
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    Re: Why no narrow nut options?

    Just looking at Monroes it looks really narrow. I always said that's why he played up the neck so much.
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    Re: Why no narrow nut options?

    Comparing different sources I have I found in my original Siminoff book he never wrote a number but had several different measurements from one drawing to the next between 1" and 1 1/16". ...
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    Re: 1977 Gibson F-5 Questions

    Does it look like the tuners were replaced? Can you see an imprint in the finish? Those usually had Gotoh's.
  13. Thread: A plans,

    by Jim Hilburn
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    Re: A plans,

    You could use Adrians plan. Just draw a line that eliminates the scroll and take that and mirror image the bass side for the treble side instead of using the other side of the print with the points...
  14. Thread: truss rods

    by Jim Hilburn
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    2,198

    Re: truss rods

    These xrays, one Gibson and one Collings help to illustrate the leverage I've mentioned. Compare the adjusting nut location on both.
  15. Thread: truss rods

    by Jim Hilburn
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    2,198

    Re: truss rods

    Cumberland Acoustic sold and I assume still sells a straight rod with a welded stop and comes with a great small adjusting nut. I just shaped it to my needs. A little shorter than as shown on...
  16. Thread: truss rods

    by Jim Hilburn
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    2,198

    Re: truss rods

    I just looked up Ted (Thaddeus) McHugh's trussrod patent. While he didn't explain why the rod was curved he did say one reason for the invention was so you wouldn't have to be so selective as to what...
  17. Thread: truss rods

    by Jim Hilburn
    Replies
    48
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    2,198

    Re: truss rods

    A straight rod slot like the Collings can be done by gluing an elevating board near the nut although I remember using a couple of screws into the part that would be cut off to get the shape of the...
  18. Thread: truss rods

    by Jim Hilburn
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    2,198

    Re: truss rods

    https://www.mandolincafe.com/forum/threads/89241-Installing-traditional-trussrod

    I'm hoping this will link to a thread I posted in 2012.
  19. Thread: truss rods

    by Jim Hilburn
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    2,198

    Re: truss rods

    Not so sure Max. Seems only a slight bend would solve the spin problem but they seemed to go out of their way to sink it so deep in the back.
    Still only conjecture on my part though.
  20. Thread: truss rods

    by Jim Hilburn
    Replies
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    2,198

    Re: truss rods

    To me part of that equation is the long curved heel which allows the deep set. To me the "straightening" force is spread along the entire rear downward curve and that is in the thickest most massive...
  21. Thread: truss rods

    by Jim Hilburn
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    2,198

    Re: truss rods

    Like this.
    And thanks to Adrian for the print.
  22. Thread: truss rods

    by Jim Hilburn
    Replies
    48
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    2,198

    Re: truss rods

    If it's true that a straight rod deep in the neck is all thats needed, then what was Ted McHugh thinking when he went with the curved rod? My best explanation is to have the adjusting nut far into...
  23. Thread: truss rods

    by Jim Hilburn
    Replies
    48
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    2,198

    Re: truss rods

    It was when the F5 was introduced with the longer thinner neck that the trussrod was introduced. Prior to that the ovals had a short neck with 12th fret joint, were much wider with a more robust neck...
  24. Thread: truss rods

    by Jim Hilburn
    Replies
    48
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    2,198

    Re: truss rods

    Siminoff believes the Gibson curved rod is poorly concieved because as tension is applied it is trying to straighten itself which would cause the neck to upbow. I think that's wrong because to get...
  25. Thread: truss rods

    by Jim Hilburn
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    48
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    2,198

    Re: truss rods

    I've always wanted to see a CAD simulation of all the different kinds of trussrods.
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