estebanana -> RE: First Build - Troutie's Photo Journal (May 23 2012 17:17:30)
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quote:
make everything as light as possible - for example the bracing - he said to reduce it beyond what's called out. Is this also true for the harmonic bars? Do they really play much of a role and would reducing their profile lend to a quicker reponse too? I'm looking for the explosive blanca sound (not that my playing supports the need :( ). With respect to Monrad, he was a friends teacher who makes fabulous guitars. I have a slightly different take on the as light as possible school of thought. For back braces I've been making them slightly beefier and cutting the ends down more. Reason is I'm using a lot of Port Orford and find it is already a very light wood, not very dense and the little extra mass in the back braces has been helpful to getting the back to sound and respond like I want. Different kinds of materials may call for a little extra here or there. Harmonic bars, Hmm. well there are different ways of doing them. You can not scallop the ends, or you can deeply scallop the ends. You may also want to put some arching in the lower harmonic bar. You may want to think about how you pillar them up from the ribs. Tall fitted triangular pillars, beefy wide pillars or simply a glue block on top of the brace. All this in conjunction with how you scallop the brace. A deeply scalloped harmonic bar can make the top really lively, and to some extent have an effect on sustain. You are dividing the top in half basically at the lower harmonic bar and that division can be strong and inflexible or slightly flexible with a scalloped bar. It also has to do with how high and wide the bar is. Generally the lower wider harmonic bar gives the top lower pitch which on flamencos is helpful. Look at Santos' harmonic bars they are kind of squat and hacked out. I would say the higher the bar the more you can scallop it the lower the bar the more you may want to let it run across straight. Scalloping lowers the pitch, making the bar high and thin raises it. If you arch it think about how that arching adds stiffness the area and scallop accordingly. If you want a lively guitar think about scalloping the ends very low. But remember lively does not always equal profound. Many lively guitars are just so so, with no internal juice. No forcing power. The way you pillar the ends of the harmonic bar, heavy pillars lots of coupling with the sides helps sustain, heavy also can be too tight. Most flamenco guitars use moderate pillars. Light fan braces with light top structure, heavy scalloped harmonic bar can be a recipe for a snappy guitar. But the bridge and how it is put on is very important. The bridge should be light something like 17 or 18 grams as light as 16 as heavy as 22 has been a good range for me. A nice rosewood, ideally Brazilian, or something with those qualities. A light bridge with light top structure will usually give a fast acting guitar, and you can slightly spring in the bridge or fit it perfectly. There's a way of building where you make the top more or less flat and then make an arch under the bridge and suck the top up into the arch when you glue it on. You can also make the arc in the top quite pronounced and then fit the bridge on perfectly- you can also do something half away in between where the bridge gives the top some lift, but the top has some arch. You really have to experiment with all those ways of how the bridge and top work together to find your own sound. When Gene Clark helped me with my first guitars he said it backwards. Make them substantial like the Santos interior he showed me. His idea was make the guitar meatier and shoot for making it profound, then over successive guitars remove weight and mass until you arrive at your own guitar sound and feeling. I think I matured much, much slower than my colleagues who were more specifically coached, but I am happy with where I ended up and where it's going. Chris Berkov was also the one who gave me a little talk about how the bridge and the top work together. I worked on that for a long time after what he took about ten minutes to explain. With respect to tapping on the top, you know there are all kinds of things to say that would be very accurate in terms of pitches to aim for how many intervals to separate the back tone for the top. None of them are a cover all formula, here is what Gene said to me: Think of the back like the sound of the tabla in Indian music, think of the top like a snare drum in a marching band. Higher pitched back, lower pitched top. Follow the way the top and back pitches lower and rise when you cut the binding channels. Sometimes they change after the binding goes in, they don't go back exactly where they were before you cut the channels. Just be aware of that stuff as you tap when you build. He also said listen for music in the box. Does the guitar sound musical while you make it? Perhaps that is superstitious or not logical, but it is fun and you want to have fun. So there are lots of things to think about. Some things to consider: Do you want to willfully direct your building into a certain sound or do you want to push it in a direction, but be open to what happens and react to that? Do you want to make a sound you hear in your head or do you want to hear what you make? These question seem obvious, but they are important to never lose sight of. The other thing Gene talked about was the difference between what he called the "instant gratification" guitar and the guitar which will take time to open. He also talked a lot about the breathiness of the fundamental sound and the support of overtones through the fundamental. But that is for another day. You're a person who is technically proficient, making these things will not be your issue. Figuring out who you are as maker will be your thing. There are no easy formulas you just have to risk it and build them. Have strong players crit your work and then think carefully about what they say. Don't do everything they say, just use it as part of your awareness of your practice. What Gene did for me is tell me to discover who I am while I made the guitars, rather than try to will them to be this way or that way. Maybe not the best business advice, but as I said I'm happy where it took me.[:D] P. S. Mind which direction the grain runs in your heel blocks.
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