Bridge Came Off

Construction and repair of Classical Guitar and related instruments
center592
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Bridge Came Off

Post by center592 » Tue Jan 01, 2019 6:51 pm

Hello,
The bridge popped off my classical guitar and I want to put it back on. It was glued on after the finish was put on. The bridge pulled off some of the finish. It wasn't glued on very well, not all the way out to the edges of the bridge. So now there is some area where the bridge sat that has finish still on the the guitar but most of the area has bare wood.
I was thinking of using the heat gun from my soldering station to heat up the glue then scrape it off. I would use the heat gun at a good distance and with fast passes to warm up the glue a little at a time. I also thought of heating up a flat spatula like thing with the heat gun lay it on the bottom of the bridge to heat up the glue. Which do you think would be the better way?

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pogmoor
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Re: Bridge Came Off

Post by pogmoor » Wed Jan 02, 2019 1:15 pm

If you post pictures of the damage you may get replies.
Eric from GuitarLoot
Renaissance and Baroque freak; classical guitars by Lester Backshall (2008), Ramirez (Guitarra del Tiempo 2017),
Yamaha (SLG 130NW silent classical guitar 2014).

Alan Carruth
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Re: Bridge Came Off

Post by Alan Carruth » Wed Jan 02, 2019 5:44 pm

Some makers, even good ones, do glue the bridge down on top of the finish. This is most common when the finish is something like UV cure polyester, or epoxy, which are used less by high-end hand makers (although the polyester is gaining ground).

In terms of the repair, the only correct way to do it IMO is to remove the glue from the bridge bottom and re-shape the gluing surface, if need be. You also need to get the finish off the top, so that the bridge can glue down to the wood. This can be difficult, particularly with the hard modern finishes, which is one reason why they tend to glue the bridge down without cleaning the finish up. This is not a trivial repair; unless you have a fair amount of experience I'd find a local shop to do the work.

center592
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Re: Bridge Came Off

Post by center592 » Wed Jan 02, 2019 6:51 pm

I tried to post an image but it didn't work, I'll try again later.

Alan, that's about what I was thinking. I can't match the finish but I can remove the little bit that's left at the edges of where the bridge was. I little bit of the finish in a couple of spots started pealing up on the front side of the bridge past where the bridge sat so after I trim the finish away from where the bridge will sit I will have to glue down the finish then put the bridge back on.

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pogmoor
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Re: Bridge Came Off

Post by pogmoor » Wed Jan 02, 2019 7:04 pm

Instructions for posting images here: viewtopic.php?f=30&t=49807. The most usual difficulty in posting images is exceeding the limit for file size; it's usually necessary to reduce the size of photos taken with a digital camera or phone.
Eric from GuitarLoot
Renaissance and Baroque freak; classical guitars by Lester Backshall (2008), Ramirez (Guitarra del Tiempo 2017),
Yamaha (SLG 130NW silent classical guitar 2014).

center592
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Joined: Tue Jan 01, 2019 6:22 pm

Re: Bridge Came Off

Post by center592 » Wed Jan 02, 2019 9:11 pm

"Once you have had two messages approved by the moderators, you can attach the following types of files to your messages:"

I tried to attach an image in my first message after I joined this forum. Let's see if it will work now.
Last edited by center592 on Wed Jan 02, 2019 9:48 pm, edited 4 times in total.

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pogmoor
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Re: Bridge Came Off

Post by pogmoor » Wed Jan 02, 2019 9:16 pm

That doesn't work for me. It's a link to a Google image, so can only be seen if you have a Google account. In any case Google gives it a 404 error (not found).

Why not just attach a jpg image to your post?
Eric from GuitarLoot
Renaissance and Baroque freak; classical guitars by Lester Backshall (2008), Ramirez (Guitarra del Tiempo 2017),
Yamaha (SLG 130NW silent classical guitar 2014).

center592
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Joined: Tue Jan 01, 2019 6:22 pm

Re: Bridge Came Off

Post by center592 » Wed Jan 02, 2019 9:55 pm

Don't know how to do that. Tried to copy and paste it to the post but it didn't work.

Image

Update, I think I figured it out.

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pogmoor
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Re: Bridge Came Off

Post by pogmoor » Wed Jan 02, 2019 10:03 pm

center592 wrote:
Wed Jan 02, 2019 9:55 pm
Update, I think I figured it out.
Well done :)
Eric from GuitarLoot
Renaissance and Baroque freak; classical guitars by Lester Backshall (2008), Ramirez (Guitarra del Tiempo 2017),
Yamaha (SLG 130NW silent classical guitar 2014).

center592
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Joined: Tue Jan 01, 2019 6:22 pm

Re: Bridge Came Off

Post by center592 » Wed Jan 02, 2019 10:34 pm

This is a better image of how little of the bridge was glued.

Image

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