All Discussions Tagged 'Diagnosis' - FRETS.NET2024-03-29T14:34:33Zhttp://fretsnet.ning.com/forum/topic/listForTag?tag=Diagnosis&feed=yes&xn_auth=noTricky Crack Diagnosis Issuetag:fretsnet.ning.com,2020-10-09:2177249:Topic:2012722020-10-09T16:00:36.899ZDave Domizihttp://fretsnet.ning.com/profile/DaveDomizi
<p><span>Hi,</span></p>
<p></p>
<p><span>My name is Dave Domizi and I run The Fret Shop in Athens, GA. I hope that you’re all well.</span></p>
<p></p>
<p><span>I’m writing to ask for any experienced ideas that you might have for sorting out a trickier crack diagnosis issue (finish crack vs wood crack) that came to me today. The guitar is a 1967 Gibson Hummingbird that has had various owners and is changing hands again from a previous customer of mine to a reseller as part of a…</span></p>
<p><span>Hi,</span></p>
<p></p>
<p><span>My name is Dave Domizi and I run The Fret Shop in Athens, GA. I hope that you’re all well.</span></p>
<p></p>
<p><span>I’m writing to ask for any experienced ideas that you might have for sorting out a trickier crack diagnosis issue (finish crack vs wood crack) that came to me today. The guitar is a 1967 Gibson Hummingbird that has had various owners and is changing hands again from a previous customer of mine to a reseller as part of a trade.</span></p>
<p></p>
<p><span><strong>ISSUE:</strong> The back of the neck has a roughly 6” long, tight crack that starts about 1/4” inside of the high-E tuner plate and runs somewhat diagonally across to the bass side/down the neck toward the body across the V-carve transition area behind the nut, ending roughly 3/4” from the binding/edge of the neck, roughly 3” past the nut. This is a strange one - not a traditional headstock break, maybe not a break at all. Rather it may simply be a finish crack, or it could be a stress crack in the wood, possibly from the internal truss rod hardware. The guitar hasn’t been abused or suffered any obvious hits/dings on the neck, and it has been stored in proper climate.<span class="Apple-converted-space"> </span></span></p>
<p></p>
<p><span>Under mild magnification, the crack does not show any visible signs (larger dark shadow line) that it is open/deep, and light pressure grabbing and gently flexing the headstock did not appear to change this, ie - it doesn’t appear to move under light force. I wouldn’t want to apply heavier force out of concern that it could cause further damage, even if only aesthetic. I suppose it’s possible that 53 years of internal force from the truss rod/anchor could cause such a crack in the wood, but there is no significant doming/bubbling/spreading open of the crack to indicate this definitively.</span></p>
<p></p>
<p><span><strong>QUESTION:</strong> Are there any additional techniques or equipment that should be considered (x-ray, MRI, dry ultrasound, high powered magnification, etc) that might help to determine the actual nature and depth of such a crack? The involved parties need a definitive diagnosis to aid in the deal & reselling process, and I am unfamiliar with how porous wood grain/wood filler/finish/etc would behave under these techniques, and whether it’s even possible to achieve this goal.</span></p>
<p></p>
<p><span>I’m very grateful for your time and any thoughts and info that you might have. Stay healthy & well.</span></p>
<p></p>
<p><span>Thank You,</span></p>
<p></p>
<p><span>Dave</span></p>
<p></p>
<p></p>