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Preparing fan bracing
http://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=22615
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Author:  crich [ Wed Jun 03, 2009 2:55 pm ]
Post subject:  Preparing fan bracing

My first classical so bear with me. Does profiling the bottom of the fan braces to the dome help keep the shape? Or is it just a waist of time considering their size? Does it hurt? :? Clinton

Author:  Colin S [ Wed Jun 03, 2009 4:23 pm ]
Post subject:  Re: Preparing fan bracing

Crich, I believe that most people, myself included, just spring the fan braces onto the top in the solera or radius dish. When the glue has dried and the go bars removed the braces have been laminated to the top and hold the dish shape. I use the 3mm deep, 7mm wide Torres style fans and they hold the dome just fine.

Colin

Author:  WaddyThomson [ Wed Jun 03, 2009 4:28 pm ]
Post subject:  Re: Preparing fan bracing

No need to profile the fan braces. Just spring them into the top, and it will hold the shape fine.

Edit: Like Colin said.

Author:  WaddyThomson [ Wed Jun 03, 2009 4:37 pm ]
Post subject:  Re: Preparing fan bracing

Here you go, just for fun, these are pictures of my top just after gluing and shaping the braces. You can see how it holds the shape. My top is both domed and arched to the outside edges, so it's a little exaggerated, but there is nothing holding the shape but the fan braces.
Attachment:
P1010563 (Large).JPG
Attachment:
P1010565 (Large).JPG

Author:  douglas ingram [ Wed Jun 03, 2009 4:39 pm ]
Post subject:  Re: Preparing fan bracing

If you have any doubt, you can believe it! I was skeptical at first, too.

Author:  crich [ Wed Jun 03, 2009 5:11 pm ]
Post subject:  Re: Preparing fan bracing

Cool. :D I guess I should prepare the height close to the final dimension so they spring easier. Thanks for the pictures Waddy. There's more little anomalies than I thought between steel and nylon string guitars. Clinton

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