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 Post subject: Problem removing bridge
PostPosted: Mon Jun 05, 2017 10:38 am 
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Koa
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A friend's guitar (Fender 200sx (mid 90s cheap)) had the bridge lifting. Wanting to help her out and get some repair practice, I offered to fix it. When I removed the bridge, the top layer of the plywood top came off with it. It is almost completely clean about 1/8" in from the bridge all the way around. I assume it's overzealous scoring during manufacture. It must have already separated and been peeling up on its own before I started because it was lifted more than 1/2 way across the bridge.

So now that I'm here, what's the best way to fix it? It all fits together nicely and I think I can just glued it up and clamp it. Any reason that's a bad idea?

Thanks,

Mike

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PostPosted: Mon Jun 05, 2017 11:50 am 
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Koa
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Oh! And the followup question would be what glue would I use? Since it came apart between layers, there must be some sort of plywood glue in there that I assume will keep my glue from sticking well.

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PostPosted: Mon Jun 05, 2017 5:40 pm 
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Old Growth Brazilian Rosewood
Old Growth Brazilian Rosewood
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Joined: Fri Nov 02, 2007 9:49 am
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Location: Ann Arbor, Michigan
First name: Hesh
Last Name: Breakstone
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ep*xy...

A guiding principal of our trade is what's appropriate for the instrument......

ep*xy.....;)

PS: Meaning a quality epoxy such as West, Bob Smith, System III would be my choice.

PSS: Helping a friend can have scope creep. Good on ya anyway [:Y:]

PSSS: If the mess still fits well together just pick the fibers interfering with a great fit and go for it as is. We just don't talk about these kinds of repairs in pubic though..... :? :D

PSSSS: If someone ever asks about it be like Clint Eastwood in Heartbreak ridge when a pile of women's magazines is found on the empty bus seat next to him. Tell them someone must have left them there.....



These users thanked the author Hesh for the post (total 2): gxs (Sat Jun 24, 2017 10:12 pm) • Mike Lindstrom (Mon Jun 05, 2017 9:32 pm)
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PostPosted: Mon Jun 05, 2017 9:39 pm 
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Koa
Koa

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Thanks for the suggestion. That's what I was hoping. No picking needed - no fibers to worry about. It just fits back together. I've got some (I think) West Systems left over, but I don't use a lot of epoxy any more. Does it have a shelf life? I guess I'll mix some up tonight and know in the morning.

And who knows. She's talked about having me build her a new instrument, so maybe this only needs to be a short term fix. We'll see.

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These users thanked the author Mike Lindstrom for the post: Hesh (Mon Jun 05, 2017 11:39 pm)
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PostPosted: Mon Jun 05, 2017 11:41 pm 
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Old Growth Brazilian Rosewood
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We've used pretty old ep*xy with no issues. One of the two parts will amber which can actually be a good thing color matching wise to older finishes. I'm told that the amber color on older ep*xy is UV cause but does not seem to impact strength.


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PostPosted: Tue Jun 06, 2017 9:18 am 
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Koa
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What's the current wisdom about flexible vs. rigid epoxy for this?

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PostPosted: Wed Jun 07, 2017 5:11 am 
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Old Growth Brazilian Rosewood
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Mike Lindstrom wrote:
What's the current wisdom about flexible vs. rigid epoxy for this?


Ep*xy is dampening enough as it is and glue lines tend to be thick. I would go for rigid, quality ep*xy and not use the flexible stuff.



These users thanked the author Hesh for the post (total 2): Clinchriver (Thu Jun 15, 2017 5:34 am) • Mike Lindstrom (Wed Jun 07, 2017 8:18 am)
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