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final thicknesses http://www-.luthiersforum.com/forum/viewtopic.php?f=10102&t=10029 |
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Author: | bob J [ Wed Dec 27, 2006 11:45 am ] |
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This is for OM, addi bracing. Could someone please give me the final thickness for: Macassar Ebony b/s and Englemann top? For fingerstyle guit. Thanks loads, |
Author: | Bruce Dickey [ Wed Dec 27, 2006 12:08 pm ] |
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Without handling the wood, it's anyone's guess. Many folk go .080 to .100 for backs .070 to .090 inches for sides Tops well, somewhere around .110" A lot of times tops vary up to .015" |
Author: | peterm [ Wed Dec 27, 2006 1:30 pm ] |
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Bruce hit right on! ![]() |
Author: | Bruce Dickey [ Wed Dec 27, 2006 1:44 pm ] |
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![]() |
Author: | bob J [ Wed Dec 27, 2006 8:52 pm ] |
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You are all wonderful. Hey Bruce, great to gear from you. The Maccasar I have handled is much the same--stiff, stiff, stiff Thanks so much, |
Author: | bob J [ Wed Dec 27, 2006 8:57 pm ] |
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Do you think that sitka or englemann braces would be more appropriate for the eng. top? |
Author: | Bruce Dickey [ Thu Dec 28, 2006 1:51 am ] |
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Bob, I'm sure Sitka or Englemann or Cedar or Mahogany braces would all work. However, I'm sold on Adirondack...... for now. Good luck with your guitar. Don't look back, something may be gaining on you. |
Author: | TonyKarol [ Thu Dec 28, 2006 2:06 am ] |
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Doubling a braces height cubes its strength - or look at it this way - a 1% increase in height is about a 3% increase in strength. Depending on stiffness, your top might go as low as 95-100 - I could never say without flexing it, but I pretty much never go below those numbers for something 000/OM sized. Once its all built, you need to see how stiff it is around the bridge area by pushing down with you thumb, and then possibly thin the edges to loosen it up a bit, but leave the middle stiffer - thats where your highs will come from. |
Author: | Michael Dale Payne [ Thu Dec 28, 2006 4:50 am ] |
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To me using the species of braces as the top is not an issue. Rather the stiffest braces I get my hands on is what I look for. Braces add to tone via their stiffness, shape and mass |
Author: | Sylvan [ Thu Dec 28, 2006 9:46 am ] |
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For a long time I always thought that the thinner and lighter the bracing the better. Theoretically, at least I thought, was the point that the top would explode if any more wood was removed. So I always strived to make the bracing lighter and lighter. Over time though, I began to realize that lighter and thinner has its' limits. Once the bracing and top reach a certain point, then lighter and thinner will actually degrade the sound of the instrument. So how do you know how far to take it? I wish I could give you a definitive answer. I don't think there is one. So much is dependent on the top wood; its' quarter and stiffness matter so much. The point of all of this rambling is to be thinking of the top and braces as a unit; not individually. And more importantly, the optimum point is NOT where any more wood taken would result in the top exploding. It is somewhere quite far from that point. The more you build, the better you will get at gauging that point. |
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