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 Post subject: Let's see some bracing
PostPosted: Mon Feb 22, 2010 9:38 pm 
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Walnut
Walnut

Joined: Thu Nov 26, 2009 5:32 pm
Posts: 32
First name: Dan
Last Name: Normand
State: Massachusetts
Zip/Postal Code: 02648
Country: USA
Focus: Build
Status: Amateur
Hello everyone,

I've been thinking about bracing a lot lately, pondering in my spare time. I like to try and figure out how the braces distribute pressure and vibrations across the soundboard. Anyways, my Google-Fu seems to be pretty lousy as of late, and every time I try and find some diagrams of bracing all that pops up are pictures of X-bracing, which I'm pretty familiar with. Anyone around here happen to have some pictures of alternate bracing patterns lying around, or a link to point me in the right direction? A-bracing to be specific, I've never actually seen under the hood of an A-brace. The inner nerd in me is willing to pay up for a good set of plans, if needs be.

My Dad had Pink Floyd and Led Zeppelin posters on his wall, I have guitar plans :lol: , to each his own.
The best to you
Dan


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PostPosted: Mon Feb 22, 2010 11:04 pm 
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Cocobolo
Cocobolo

Joined: Tue Dec 23, 2008 8:36 pm
Posts: 287
First name: Hugh
Last Name: Anderson
City: Lake Oswego
State: oregon
Here's one from a few years ago, fingers and all. I wasn't finished at the time, but you get a general idea. It's x-braced with an A brace above. That's one form of A brace anyhow.


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PostPosted: Tue Feb 23, 2010 10:56 am 
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Koa
Koa
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Joined: Tue Dec 15, 2009 1:46 pm
Posts: 667
First name: Robert
Last Name: Renick
City: Mount Shasta
State: ca
Zip/Postal Code: 96067
Country: us
Focus: Build
Status: Amateur
Great web site if you have not found this one yet. Good plans for an A braced guitar.

http://www.liutaiomottola.com/instruments/Ipomoea.htm
Rob

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PostPosted: Tue Feb 23, 2010 6:54 pm 
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Walnut
Walnut

Joined: Thu Nov 26, 2009 5:32 pm
Posts: 32
First name: Dan
Last Name: Normand
State: Massachusetts
Zip/Postal Code: 02648
Country: USA
Focus: Build
Status: Amateur
Hey thanks fellas.

Best to you
Dan


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PostPosted: Tue Feb 23, 2010 7:29 pm 
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Koa
Koa
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Joined: Tue Nov 28, 2006 1:44 pm
Posts: 1105
Location: Crownsville, MD
First name: Trevor
Last Name: Lewis
City: Crownsville
State: MD
Zip/Postal Code: 21032
Country: USA
Focus: Build
Status: Semi-pro
I've got one of the workstation laptops at home from work tonight....if I get it done, I'll post some braced guitar top FEA work later. FEA is the computer simulation software that engineers use to predict stresses, deflections, modal response (i.e vibration characteristics) ... in a number of engineered products, in just about every other industry. I don't think it has been used much in the guitar world...but now that the software is more attainable I think it is only a matter of time before the big shops "discover" these tools (for a mere $10k in software you can do this type of work - what a deal!)

Trev

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