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Board index » Instrument Restoration and Repair

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kmetzger
 Post subject: Crack in guitar heel
PostPosted: Sun Jul 20, 2014 2:36 pm 
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Walnut
Walnut

Joined: Sat Jul 19, 2014 12:57 pm
Posts: 3
Location: Ajijic, Mexico
First name: Kim
Last Name: Metzger
City: Ajijic
State: Jalisco
Zip/Postal Code: 45920
Country: Mexico
Focus: Repair
Status: Amateur
Hello everyone - this is my first post and I hope I posted the photos properly. I'm definitely not a luthier, but I've been a woodworker for 30 years and have been asked by members of a local orchestra to help out with minor instrument repairs. I have checked the guitar yet to see if I can open the crack slightly to allow me to apply thin hide glue. If I can, I think this should be a fairly easy repair. If not, I have thought about sawing down the length of the crack and inserting a thin spline and gluing it in. Any thoughts on this procedure?
Thanks in advance, Kim


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Kim Metzger
Ajijic, Mexico
Gallery http://tinyurl.com/7w5fm25
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John Steele
 Post subject: Re: Crack in guitar heel
PostPosted: Sun Jul 20, 2014 11:43 pm 
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Walnut
Walnut
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Joined: Wed Jul 22, 2009 6:51 pm
Posts: 15
First name: John
Last Name: Steele
City: Wilson
State: NY
Zip/Postal Code: 14172
Country: USA
Focus: Build
Sounds like you have the right idea.
you might want to check out www.frets.com
A wealth of info there
Cheers
John
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Frank Ford
 Post subject: Re: Crack in guitar heel
PostPosted: Mon Jul 21, 2014 9:48 am 
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Cocobolo
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Joined: Fri Feb 18, 2005 6:18 am
Posts: 265
Location: United States
First name: Frank
Last Name: Ford
City: Palo Alto
State: CA
Zip/Postal Code: 94301
Country: USA
Focus: Repair
Status: Professional
Getting the glue in there is the trick. Thin cyanoacrylate may run in there and serve well enough to hold, but other glues might be problematic. For an inexpensive instrument like this one, I often drill a 3/16" hole through the heel, or through the fingerboard a little past the crack, pour in the glue and follow it by jamming a 3/16" diameter screwdriver as a plunger to force the glue into and out of the crack. I can generate quite a lot of hydraulic pressure that way, and the glue floods out nicely. Then clamping up, cleaning up, and filling the hole with a nice little plug takes care of the job. My little plug would be a piece of ordinary dowel, sliced off and stained with a marking pen, or whatever.

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kmetzger
 Post subject: Re: Crack in guitar heel
PostPosted: Mon Jul 21, 2014 7:41 pm 
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Walnut
Walnut

Joined: Sat Jul 19, 2014 12:57 pm
Posts: 3
Location: Ajijic, Mexico
First name: Kim
Last Name: Metzger
City: Ajijic
State: Jalisco
Zip/Postal Code: 45920
Country: Mexico
Focus: Repair
Status: Amateur
Thanks, John and Frank. I now have the guitar and see that it is fairly easy to open the crack. I think I'll try CA glue. Should I use a syringe? Should I have nail polish remover handy to remove glue that seeps over the edge?

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Kim Metzger
Ajijic, Mexico
Gallery http://tinyurl.com/7w5fm25
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Michiyuki Kubo
 Post subject: Re: Crack in guitar heel
PostPosted: Tue Jul 22, 2014 6:21 pm 
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Joined: Thu Oct 04, 2012 3:50 pm
Posts: 294
Location: Austria
First name: Michiyuki
Last Name: Kubo
State: Oö
Country: Österreich
Status: Amateur
Is this a Bolt on by any chance? I would assume not since it is an orchestra but if it is be careful that you do not seize the bolt.

Is there a bulge by the heel on the sides? Think i am seeing things not really there.

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kmetzger
 Post subject: Re: Crack in guitar heel
PostPosted: Tue Jul 22, 2014 8:54 pm 
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Walnut
Walnut

Joined: Sat Jul 19, 2014 12:57 pm
Posts: 3
Location: Ajijic, Mexico
First name: Kim
Last Name: Metzger
City: Ajijic
State: Jalisco
Zip/Postal Code: 45920
Country: Mexico
Focus: Repair
Status: Amateur
I think the operation was successful. I applied CA glue with a sewing needle clipped off to form a tiny fork and also got plenty of glue in directly from my Hot Stuff bottle. Time will tell.

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Kim Metzger
Ajijic, Mexico
Gallery http://tinyurl.com/7w5fm25
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