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PostPosted: Mon Nov 12, 2018 6:04 pm 
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Koa
Koa

Joined: Fri Feb 10, 2017 11:09 pm
Posts: 577
Location: Cowichan Valley, BC, Canada
First name: Conor
Last Name: Searl
City: Duncan
State: British Columbia
Zip/Postal Code: V9L 2E5
Country: Canada
Status: Semi-pro
The music store I do some work for sent me this mandolin to see if I could do anything with it. Two fairly obvious issues otherwise its in pretty great shape.

First, one of the braces has come right off and I can see the very end of the second brace inside and it looks like its coming loose too. Any tricks other than taking the back off to fix loose braces inside mandolins?

Second, a screw holding the tailpiece has disappeared and over time the string tension has pulled up on the tail piece, and its bringing the binding with it (it seems other than the missing screw the tail piece is fixed directly to the binding somehow). This seems fairly simple, just get rid of the strings, glue the binding back on and find a new screw to anchor the tailpiece.

There isn't any information on the instrument to tell me what it is. But if the back does need to come off my gut says it may not be worth it. And if it is worth it, or at least worth it to the customer I'll likely pass it off to someone with more experience as I like to reserve learning experiences for my own personal instruments.


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PostPosted: Mon Nov 12, 2018 6:59 pm 
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Koa
Koa

Joined: Wed Feb 17, 2016 8:54 am
Posts: 544
State: Texas
Country: United States
Focus: Repair
Your gut is right, this mandolin will likely not be worth the effort to fix it.

Besides the top I've found these mandos usually have excessive relief in the neck, sometimes companies would just build these out of super green wood. Not saying that this one isn't a pringle but I have a feeling it likely is.

That issue at the tailpiece is likely the top having moved a bit as well, it's usually not limited to the binding.


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PostPosted: Mon Nov 12, 2018 7:08 pm 
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Brazilian Rosewood
Brazilian Rosewood

Joined: Wed Apr 08, 2009 9:34 am
Posts: 3081
There are no tricks to that problem. You will have to make a mold to hold the shape of the ribs to the original back, remove the back, glue the brace in and glue the back on again.

The instrument is likely a plywood Kay or similar. Not worth the repair. Yes, the top has likely separated from the ribs too.


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PostPosted: Mon Nov 12, 2018 7:47 pm 
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Koa
Koa

Joined: Thu Nov 04, 2010 1:46 pm
Posts: 1695
First name: Freeman
Last Name: Keller
Focus: Build
Status: Amateur
What Dan and Haans say is all the more reasons for you to take on the repair. If you fail, you haven't hurt anything, if you succeed you've learned a lot. My first neck reset attempt was a POS mandolin, I failed. A few later I built a mandolin and had that experience to work from.


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PostPosted: Mon Nov 12, 2018 8:26 pm 
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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
I agree - it's a good practice piece, nil cash value, so not too risky.

I find little benefit by making an outside mold. The back should restore the original shape of the instrument if you're reasonably careful aligning it as you glue it on.

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PostPosted: Tue Nov 13, 2018 8:19 am 
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Brazilian Rosewood
Brazilian Rosewood

Joined: Wed Apr 08, 2009 9:34 am
Posts: 3081
Sometimes that works, sometimes it doesn't. Do it all in one day, might work. Might be good practice, but will likely end up costing you time.


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PostPosted: Tue Nov 13, 2018 12:26 pm 
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Koa
Koa

Joined: Fri Feb 10, 2017 11:09 pm
Posts: 577
Location: Cowichan Valley, BC, Canada
First name: Conor
Last Name: Searl
City: Duncan
State: British Columbia
Zip/Postal Code: V9L 2E5
Country: Canada
Status: Semi-pro
Well, I've got no shortage of learning projects at hand, so I'm not too itchy to take on another. I'll talk to the owner and see what they'd like to do.


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