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Board index » Instrument Restoration and Repair

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mike-p
 Post subject: Top crack repair
PostPosted: Sat Jun 25, 2022 11:07 am 
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Cocobolo
Cocobolo

Joined: Wed Jan 22, 2014 4:59 pm
Posts: 364
Location: Co cork Ireland
Country: Ireland
Focus: Build
Small impact crack near the bridge on a cedar top. Not done any repairs but built maybe ten acoustics. Any ideas to start? Lightly built, fair bit of belly behind the bridge. Strings are slack but a bit of a crease with tension at the crack. Image

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joshnothing
 Post subject: Top crack repair
PostPosted: Sun Jun 26, 2022 7:17 am 
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Koa
Koa

Joined: Tue Jan 15, 2013 10:00 pm
Posts: 985
First name: Josh
Focus: Build
Status: Amateur
mike-p wrote:
Small impact crack near the bridge on a cedar top. Not done any repairs but built maybe ten acoustics. Any ideas to start? Lightly built, fair bit of belly behind the bridge. Strings are slack but a bit of a crease with tension at the crack. Image

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Any crease in that region is cause to check for a loose x-brace or tone bar internally. Especially after a sharp impact and definitely if you think you are seeing more belly than you should. Start with a really thorough internal inspection.


These users thanked the author joshnothing for the post: Hesh (Mon Jun 27, 2022 4:51 am)
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Barry Daniels
 Post subject: Re: Top crack repair
PostPosted: Sun Jun 26, 2022 12:24 pm 
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Brazilian Rosewood
Brazilian Rosewood

Joined: Fri Aug 19, 2005 4:02 am
Posts: 3263
Location: The Woodlands, Texas
First name: Barry
Last Name: Daniels
In regards to repair, determine if there is any internal reinforcement directly under the impact from bracing or the bridge plate. If not, then a small patch might be appropriate.

A steam dent removal process would probably bring the dent closer to level. Also, a little bit of CA would fill the remaining dent and bond the fractures.


These users thanked the author Barry Daniels for the post (total 2): Hesh (Mon Jun 27, 2022 4:51 am) • mike-p (Sun Jun 26, 2022 4:11 pm)
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mike-p
 Post subject: Re: Top crack repair
PostPosted: Sun Jun 26, 2022 4:13 pm 
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Cocobolo
Cocobolo

Joined: Wed Jan 22, 2014 4:59 pm
Posts: 364
Location: Co cork Ireland
Country: Ireland
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Thanks Barry, I had to start a new thread to post the inside picture. Im feeling empowered! I'll try to post some more pictures, a lively handmade English guitar in classical style but for steel strings, cedar over Brazilian rosewood.

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