Catastrophic failure - any hope of repair

Construction and repair of Classical Guitar and related instruments
dougcalton
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Catastrophic failure - any hope of repair

Post by dougcalton » Fri Mar 08, 2019 2:16 am

Attaching picture of a 10 year old Lattice top built by Chinese violin makers for Jerry Roberts. I played it one night fine, opened it two nights later and found the bridge had ripped off. My thinking is that it would be very difficult to patch, and not worth replacing the top (I bought it for 4K several years ago).
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1989 Marin Montero
2015 Slavko Mrdalj Lattice Top cedar, double back and sides indian rosewood

jim watts
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Re: Catastophic failure - any hope of repair

Post by jim watts » Fri Mar 08, 2019 2:28 am

Wow! For me it would be easier to replace the top than fix that. It looks like they scored deeply into the top around the bridge in order to clean off the finish.

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Kent
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Re: Catastophic failure - any hope of repair

Post by Kent » Fri Mar 08, 2019 2:34 am

Criminy Crickets

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Christopher Langley
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Re: Catastophic failure - any hope of repair

Post by Christopher Langley » Fri Mar 08, 2019 2:53 am

What a nightmare,

Sorry man.
Why is the bed never made?

Jasonm
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Re: Catastophic failure - any hope of repair

Post by Jasonm » Fri Mar 08, 2019 3:06 am

Is there a bridge patch?

khs
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Re: Catastophic failure - any hope of repair

Post by khs » Fri Mar 08, 2019 3:28 am

I feel sorry for such an accident. I happened to suffer from my guitar damage by scratch or some careless handling such as dropping down.
As for your case, it is thought that it would have happend some day unavoidably though not now. And there seems to be no alternative than replacing the top.
Positive thinking ( a good chance to upgrade the instrument ) maybe helpful a little bit in this situation. Who dares to say that more superior guitar is not awaiting ? :)

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Steve Ganz
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Re: Catastophic failure - any hope of repair

Post by Steve Ganz » Fri Mar 08, 2019 4:01 am

Thanks for posting that picture. In addition to the bridge issue, it appears in the photo that there is an issue with the rosette... Am I correct in deducing that just an artifact in the photo?
Steve

MessyTendon
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Re: Catastophic failure - any hope of repair

Post by MessyTendon » Fri Mar 08, 2019 4:32 am

Some people are amazing at repairs. You'd be surprised.

dougcalton
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Re: Catastophic failure - any hope of repair

Post by dougcalton » Fri Mar 08, 2019 8:07 am

No issue with the rosette. Bridge just ripped off the soundboard. I checked with a few luthiers, none wanted to attempt a repair. Went shopping 2 days ago, and replaced :D
1989 Marin Montero
2015 Slavko Mrdalj Lattice Top cedar, double back and sides indian rosewood

simonm
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Re: Catastophic failure - any hope of repair

Post by simonm » Fri Mar 08, 2019 8:23 am

Can you show the underside of the bridge and make a close up photo of the damaged area? At first sight the failure mode is curious to me. Is it a double top?

Putting a new top is would certainly be possible even if a repair is not. The probably of a new top sounding exactly like the old in this case is slim but certainly worth the effort for a 4k guitar.

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James Lister
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Re: Catastophic failure - any hope of repair

Post by James Lister » Fri Mar 08, 2019 9:43 am

jim watts wrote:
Fri Mar 08, 2019 2:28 am
It looks like they scored deeply into the top around the bridge in order to clean off the finish.
If Jim is right that they scored around the bridge to clean off the finish, and if the top is a typical thickness for a lattice (~1mm), then it's a miracle it lasted 10 years.

James
James Lister, luthier, Sheffield UK

dougcalton
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Re: Catastophic failure - any hope of repair

Post by dougcalton » Fri Mar 08, 2019 11:22 am

Here's a second picture with back of bridge. It's a lattice top
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1989 Marin Montero
2015 Slavko Mrdalj Lattice Top cedar, double back and sides indian rosewood

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James Lister
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Re: Catastophic failure - any hope of repair

Post by James Lister » Fri Mar 08, 2019 11:32 am

There's some weird stuff going on there. Apart from scoring around the edge of the bridge, it also looks like they've made diagonal cuts into the soundboard - note the clean diagonal (triangular) fractures in the top wood left on the underside of the bridge. I'm afraid I can only think of one explanation - incompetence.

James
James Lister, luthier, Sheffield UK

dougcalton
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Re: Catastophic failure - any hope of repair

Post by dougcalton » Fri Mar 08, 2019 11:49 am

I agree. The back and sides are beautiful. Maple, carved out like a violin. This may have been one of the first lattice top soundboards they built. I think I'll ask a local luthier to see if he can determine if the top was glued using hide glue. If not, discussion of replacing the top would be moot. Thanks for all the responses!
1989 Marin Montero
2015 Slavko Mrdalj Lattice Top cedar, double back and sides indian rosewood

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Les Backshall
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Re: Catastophic failure - any hope of repair

Post by Les Backshall » Fri Mar 08, 2019 12:41 pm

dougcalton wrote:
Fri Mar 08, 2019 11:49 am
I think I'll ask a local luthier to see if he can determine if the top was glued using hide glue. If not, discussion of replacing the top would be moot. Thanks for all the responses!
I've replaced a couple of tops that were glued with Titebond - it's not difficult. There are couple of videos on youtube showing how it's done.
Les
Lester Backshall, Guitar Maker - Aylesbury UK

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