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 Post subject: Scarf repair
PostPosted: Mon Feb 09, 2009 2:46 pm 
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Cocobolo
Cocobolo
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Joined: Mon Feb 25, 2008 12:06 pm
Posts: 157
My friend brought me his Schecter electric guitar which got knocked over and the scarf joint snapped. Seems a simple fix, but I have a couple of concerns:

What type of glue will adhere best on the old glue line?
Besides basic care, should I take precautions to protect the truss rod? It has some sort of blue covering, but I can't make out exactly what it is.

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 Post subject: Re: Scarf repair
PostPosted: Mon Feb 09, 2009 3:06 pm 
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Contributing Member
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These repairs can be easy or hard, depending on the adhesive used.
You need to know what kind of adhesive was used. Do not proceed with knowing this!
If AR/Titebond etc - this is going to be hard. The old glue needs to be removed before completing the repair. This can be hard. I would recomend in this case that the repair be done with epoxy. Some will strongly disagree. :D
If it was HHG, just clean it up so that it fits tight and add more glue and clamp.

Let us know what the adhesive was.

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 Post subject: Re: Scarf repair
PostPosted: Mon Feb 09, 2009 3:16 pm 
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Brazilian Rosewood
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Location: The Woodlands, Texas
First name: Barry
Last Name: Daniels
I seriously doubt the factory used hot hide glue so I would assume that it is some type of alphatic resin. And no glue will stick very well to that. I would slip some sandpaper into the joint, close the joint and pull the paper out. Sort of like flosssing the cheeks. This will rough up the glue and possibly get a few spots back to wood. But don't overdo this or you may end up with visible gaps and possibly a back bend in the fretboard. Then reglue.


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 Post subject: Re: Scarf repair
PostPosted: Mon Feb 09, 2009 6:39 pm 
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Koa
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Joined: Fri Dec 16, 2005 1:47 am
Posts: 504
Location: United States
SUCH a bad spot for a scarf joint. [headinwall]
Stress in the wrong direction and impossible to support on both sides like you can do on a headstock.
I fixed a Fender acoustic that was exactly the same way. I did it like Barry mentioned using 220 paper. Just a few strokes on both surfaces, then glued it with Tite-Bond. Doing the sanding created a slight 'dip' at the peak of the joint but I just did a Super Glue fill and sanded/buffed it. It showed a little but stayed solid as long as I knew the owner, which was for another couple years.


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