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Type: Posts; User: Marty Jacobson

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  1. Re: Bondhus Screw Grab for stripped screw heads

    Bondhus makes good stuff. They wouldn't sell a gimmick or garbage. Interesting product. I suspect it's primarily for socket-head screws, which is their primary product line. It should work basically...
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    Re: Feedback on a magnetic pickup

    Fun fact - the definition of a "microphone" is a diaphragm, the movement of which is sensed by a transducer.
    In this case, the pickup (whether piezo or magnetic) is the transducer, and the mandolin...
  3. Re: Dark trails appeared on the neck of my mandolin

    Could be. Maybe "resin" is the better term for what I was describing, but in my field, that means "something that polymerizes", so that's not how I think of it.
    Anyway, "tree stuff" definitely moves...
  4. Re: Dark trails appeared on the neck of my mandolin

    I also think this is sap. Seasonal changes cause resins to move around. If it were sanded flush with the surface of the neck, and has now diffused into the surrounding wood, it could certainly make a...
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    Re: an aesthetic question

    I think black tuners look great on these. And the rosewood will look more in keeping with the natural, no-frills aesthetic.
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    Re: "The Loar" truss rod wrench

    This is the best one available: https://www.amazon.com/Wera-3950-Stainless-Ballpoint-4-0mm/dp/B000X1P1VY/
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    Re: Reset bowlback mandolin neck

    What's the value of the mandolin? I'm assuming this mandolin isn't worth a $1000 repair/restoration, except for value-in-use. I think the most cost-effective option would be to remove the fretboard...
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    Re: Bass Builder Undertakes Mandola Build

    Yep, I've shipped redwood mandolins nearly 8mm thick in the center. The whole "redwood mandolins sound great but don't develop over time, may wear out or cave in over time" myth is based on people...
  9. Re: Weber Bridge - nut spinning, unable to raise/lower

    If you're in a pinch and need to raise the bridge, you could put a piece of wood the right height to prop up the bridge, temporarily making it non-adjustable. There will be an impact on tone and...
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    Re: IV F5 kit

    Honestly, I'd say build your first mandolin with no binding. It doesn't change the tone, and it is huge learning curve in and of itself.
    I spent 400 hours on my second mandolin making it look nice,...
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    Re: IV F5 kit

    Yep, I've played that mandolin and it does sound about as good as a mandolin should.
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    Re: Crushed stone for headstock inlay?

    Recon stone is a good option. Or something like Inlace, though I think it ends up having a "Woodcraft Store Demo from the 90's" vibe.

    Filling a cavity with crushed/filler inlay is actually harder...
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    Re: Mandocello Strings on Tenor Guitar

    You can do that. Whatever strings you use, it's worth running them through a string tension calculator real quick to make sure that you aren't putting more than ~10% more tension on the instrument...
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    Re: Post a picture of what's on your bench?

    Still sitting there while my teenagers laugh at me when I try to coach them about persistence and grit.

    My CNC machine died, so that turned into a year-long project and rebuild. It's pretty nice...
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    Re: Post a picture of what's on your bench?

    Medical devices more than anything else, sadly. They pay a lot better than mandolins. But myself and a lot of other folks use these polishing compounds for cleaning up instruments during setups, as...
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    Re: Post a picture of what's on your bench?

    On the bench today: a new batch of Meguair's. It was time.

    The last batch was purchased during Nickel Creek's Farewell For Now tour.

    202374
  17. Thread: Gal

    by Marty Jacobson
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    Re: Gal

    Turquoise is a lot harder than shell. When I've used real stone (vs reconstituted stone, which is stone dust in a resin binder, so it sands nicely), the best approach I found was actually to build...
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    Re: A5 top thickness

    I think we've all reshaped a top after an initial string-up in the white. Or even after finishing the instrument completely.

    I left my first mandolin top entirely too thick, no real recurve. It...
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    Re: Vacuum clamping

    Nigel Forster uses these for these types of things, John.... https://www.ebay.com/itm/283301596626

    I'd say draw it up and make something similar for yourself using your Shaper Origin.
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    Re: Vacuum clamping

    Titebond wood glue works best with a clamping pressure of 100-200PSI (depending on the wood density and porosity).

    Any screw-type clamp can exert a force relative to the screw pitch (mechanical...
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    Re: Mohawk lacquer

    I had this happen with Mohawk lacquer several years ago (2014). My air supply was not perfectly dry. I solved the air moisture problem with a drain cup thing and line dryer. No problems after that, I...
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    Re: Building a violin... easier?

    Oh man, he would absolutely clean UP on Instagram.
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    Re: Rigel Q95 BUILD

    This is correct and original. Instruments move over time, but I don't see anything to worry about here. Check the humidity, it may be a little under 45% RH right now would be my guess.
  24. Re: Problem Installing Rubner tuners on 1924 Gibson A-2 mandolin

    I would not mess with the bushings any more. You may be able to taper the back side of the bore to relieve the binding. But the only one-size-fits-all answer is to plug and re-drill the holes. It...
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    Re: My Duff is hard to tune

    Golden Age tuners are great for building character.
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