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Type: Posts; User: Marty Jacobson

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    Re: Atlanta Mandolin Luthiers

    Yeah, it's a '64 Corvair. It was my daily driver for a couple years, my brother has it now. It needs some custom sheet metal work to get it right, and he's a sheet metal pro who sets up fancy German...
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    Re: Atlanta Mandolin Luthiers

    I am pretty good at this magic trick where I make beer.... disappear.
  3. Thread: A vs. F

    by Marty Jacobson
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    Re: A vs. F

    It comes from confirmation bias, basically. It's not made up or imagined, but it's not a repeatable observation. The old "correlation does not imply causation".
    Test out a room full of mandolins,...
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    Re: Kelley A-V-5 advice needed

    Looking at the pictures, it clearly got hot. As the OP knows, it's hot right now in Australia!

    It is irrelevant what glue joint was used. If it got this hot, it was going to fail, if not in the...
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    Re: Equipment advice please

    16/32 is a great size. 10/20 is not worth it IMHO, my dual drum sander is 16" and that's just slightly narrow a lot of times. If you're doing any furniture, 10" is just not going to do it. Time is...
  6. Re: Building a new double-top mandolin by Yaron Naor

    Beautiful, Yaron. I may have asked this before, but do your instruments have the Kerman "chimneys" connecting the side sound holes to the back chamber? Would love to know your thoughts.
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    Re: How to achieve a "warmer" sound?

    There is no one factor you should be worrying about. Or, the corollary: nobody can tell you one, or a few things you can do that will magically make this happen.
    Part of that is that none of us...
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    Re: Flattop Top Thickness?

    Yep Tom, all good points. I was trying to give a sense of the relative difference in thicknesses I've arrived at between Sitka vs. Redwood, the numbers themselves are meaningless for Spencer's...
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    Re: Tone-Gard Alternative

    Nice! That's Ron McMillan's idea. Much more elegant than a Tone-Gard.
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    Re: Flattop Top Thickness?

    Not necessarily. But you don't know anything about the wood you've got on hand, other than that it's lighter than what you used before. And the side depth and the soundhole area are easy to measure,...
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    Re: Flattop Top Thickness?

    Ok, what does "darker tone" mean? To me it means, as a gross over-simplification, "Set the EQ to Bass Boost".
    So if you want it to really have those properties, consider reducing the size of the...
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    Re: Flattop Top Thickness?

    The results from my redwood builds compared to spruce builds generalizes to redwood specs being about 25% thicker, glancing through ~20 instruments that I have the best notes on.

    I start out with...
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    Re: Truss Rods vs Carbon Fiber?

    FWIW, a 1/16" diameter rod of 1144 steel would yield at over 300lb of tension (which would go up to over 1200lb yield strength for an 1/8" rod). So all of our truss rods are way overdesigned, by...
  14. Re: RIP: John Morton. Metal luthier master

    Aww, man. Always an inspiration to me, as a machinist and luthier myself (but never yet both at the same time). His instruments all look very timeless and original at the same time. A real master.
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    Re: Truss Rods vs Carbon Fiber?

    I've only ever had to adjust truss rods on customer's mandolins if the customer (or someone in the past) messed with it or broke it.
    So I build mine with carbon fiber. Same reason I use a zero fret...
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    Re: looking for Luthier near Atlanta, GA

    Thanks guys. Spencer, I think Tom's point was that he's a good half hour closer to the OP than I am... and I know his work is always set up as nicely as any instruments I've ever played!
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    Re: Tailpiece busted - is this normal?

    Not very common! Just replace it, anything can fail. Shouldn't cost more than $30, but of course you can spend as much as you like on a replacement. Just don't expect a more expensive model to impact...
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    Re: Finally Finished: Soliver #001

    Your dog looks like a Luck Dragon! (80's kid here...)

    So glad you were able to get it back together without having to do anything more invasive, looks great!
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    Re: Repairer recommendation required

    It's a bit of a trek, but Trevor Moyle's at The Acoustic Music Company in Brighton, and provides excellent service. Probably your best mandolin-centric bet in the country!
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    Re: Post a picture of what's on your bench?

    I've been teaching a lot of CAD/CAM recently. My new band name is "Axis of Revolution". The students do not think it's funny.
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    Re: Post a picture of what's on your bench?

    Torrefied wood caramelizes the sugars in the wood, you can read more about it here if you want to learn some new words.
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    Re: What's your Spraying set up?

    Then... don't. Do a Maloof finish or something and call it a day. A simple finish is better than a bad or half-hearted attempt at a full gloss finish (one of which is in your possession, and I did...
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    Re: What's your Spraying set up?

    So there's a whole other thing going on here:

    HVLP conversion guns: run off a compressor

    HVLP (true hvlp): run off a turbine

    True HVLP is essential for cabinets and stuff, virtually no...
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    Re: 1934 F5 copy

    So William, I've always been curious about this mandolin. It has a more H-5 shape than F-5 shape. Is it F-5 sized? Congrats, I'd love to hear you play it when it's back together!
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    Re: Pantograph

    At least bass players are always social distancing. Ahead of the curve. :-)
    Take that however you darn well please
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