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Frank Ford
Jun-04-2007, 3:03pm
I haven't added much in the way of mandolin repair stuff on FRETS.COM lately, but last week I had fun with this one, #an old Gibson with a sadly collapsing top:

http://www.frets.com/FRETSPages/Luthier/Technique/Mandolin/Structural/MandoTopSag/MandoTopSagViews/mandotopsag04.jpg

THE FULL STORY (http://www.frets.com/FRETSPages/Luthier/Technique/Mandolin/Structural/MandoTopSag/mandotopsag.html)

Steve Davis
Jun-04-2007, 3:51pm
You are amazing. Great work as always. Thanks for sharing.

troy
Jun-04-2007, 5:19pm
Very nice Frank!

Your site is a real boon to us hobbyists. I recently used one of your other articles (http://www.frets.com/FRETSPages/Luthier/Technique/Mandolin/Structural/MandoBrace/mandobrace.html) to save a 1970's Brazos F-style mandolin.

The top was sinking since the treble-side brace was half detatched. I used a micro torch to mutilate a seam separator, and some f-hole clamps to hold the glue job. After it was ready (waiting was torture!) I slowly worked it up to tune. It sounded great. I started pounding on it to be sure it would hold. After three minutes of hard chopping, I heard POW! You can imagine how my heart sank. It took me a moment to realize that one of the E strings had given up the ghost. The brace is fine.
http://www.mandolincafe.net/iB_html/non-cgi/emoticons/smile.gif

It's now my main ax. My other playing mandolin (an IV kit which I had been playing in the white) is now in pieces so I can finish it!

BlueMountain
Jun-05-2007, 3:09pm
This is an elegant solution, Frank. But why was it better to put in a transverse brace than a vertical brace that would stiffen only the part where the grains were too thin? Was it because with the transverse brace, the stronger parts helps support the weaker section?

Frank Ford
Jun-06-2007, 1:45pm
Well, I surely don't know what's best for all situations, but I chose the transverse brace because there was a slight amount of sinking on the treble side as well. I figured the brace could help carry the load out to the edges if it went all the way across.