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PostPosted: Thu Jan 13, 2022 1:42 am 
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Hi guys,

It's been a long time since I have posted. I have a customer with this Martin 00CXAE guitar and the bridge has come unglued, twice. This model is made entirely of synthetic materials called "HPL", a compressed wood fiber derivative, from what I gathered from a brief internet search. The bridge was reglued once by another repairman but the glue joint failed. Have any of you guys ever done a bridge reglue on these guitars and if so what glue worked for you?


Thanks!
Gil

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PostPosted: Thu Jan 13, 2022 3:57 am 
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I'll ask Dave Collins what he uses today and get back to you. But I wanted to point out that the bridge is lifting because the top clearly has issues. You can see the distortion from here and it looks like the bridge gluing surface is anything but level and possibly changing. I would be keen to get a mirror inside and look at the bridge plate, surrounding braces and particularly the bridge pin holes. This top looks like it's distorted to the point where that's the cause of the lifting bridge(s) and that should be addressed first.

Hey welcome back too Gil.

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PostPosted: Thu Jan 13, 2022 1:10 pm 
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Thanks Hesh. These are pics the customer sent me. I don't have it in hand but I was planning to look it all over when I get it.


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PostPosted: Thu Jan 13, 2022 3:23 pm 
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Gil just spoke with Dave and he said Martin recommends white glue.

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These users thanked the author Hesh for the post: Goodin (Thu Jan 13, 2022 11:12 pm)
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PostPosted: Thu Jan 13, 2022 11:13 pm 
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Ok thanks Hesh! And tell Dave thanks!



These users thanked the author Goodin for the post: Hesh (Fri Jan 14, 2022 4:15 am)
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PostPosted: Fri Jan 14, 2022 4:16 am 
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Goodin wrote:
Ok thanks Hesh! And tell Dave thanks!


You bet. He added that he's not all that secure with the idea of white glue and that this may, may be a decent place for epoxy..... Oh the horror..... :)

But check out what is going on with that top because that's the root cause of the bridge lift.

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These users thanked the author Hesh for the post: Goodin (Fri Jan 14, 2022 9:28 am)
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PostPosted: Fri Jan 14, 2022 9:30 am 
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Yeah I thought about epoxy.


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PostPosted: Fri Jan 14, 2022 9:34 am 
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Hesh wrote:
Goodin wrote:
Ok thanks Hesh! And tell Dave thanks!


You bet. He added that he's not all that secure with the idea of white glue and that this may, may be a decent place for epoxy..... Oh the horror..... :)

But check out what is going on with that top because that's the root cause of the bridge lift.

I remember asking the same question round here a few years ago and IIRC, the consensus was epoxy and even CA popped up from very experienced members who had checked with Martin. Maybe the recommendation has changed.


Pierre
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These users thanked the author Smylight for the post (total 2): Hesh (Fri Jan 14, 2022 12:46 pm) • Goodin (Fri Jan 14, 2022 9:40 am)
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PostPosted: Fri Jan 14, 2022 12:47 pm 
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Smylight wrote:
Hesh wrote:
Goodin wrote:
Ok thanks Hesh! And tell Dave thanks!


You bet. He added that he's not all that secure with the idea of white glue and that this may, may be a decent place for epoxy..... Oh the horror..... :)

But check out what is going on with that top because that's the root cause of the bridge lift.

I remember asking the same question round here a few years ago and IIRC, the consensus was epoxy and even CA popped up from very experienced members who had checked with Martin. Maybe the recommendation has changed.


Pierre
Guitares Torvisse


Pierre Dave likes epoxy too for these but since this is a public forum and we are Martin certified I offered what Martin recommends. But you're right, for these counter top instruments epoxy may be a better way to go.

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These users thanked the author Hesh for the post: Smylight (Fri Jan 14, 2022 3:09 pm)
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PostPosted: Fri Jan 14, 2022 3:09 pm 
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Thanks Hesh. I get it.


Pierre
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These users thanked the author Smylight for the post: Hesh (Sat Jan 15, 2022 5:22 am)
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PostPosted: Sat Jan 15, 2022 5:22 am 
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Old Growth Brazilian Rosewood
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Smylight wrote:
Thanks Hesh. I get it.


Pierre
Guitares Torvisse


I'm being politically correct :D Yep me....... :D :? :D Hope you are doing great Pierre!!!

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These users thanked the author Hesh for the post: Smylight (Mon Jan 17, 2022 12:58 pm)
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PostPosted: Mon Jan 17, 2022 12:14 pm 
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Perhaps my info is outdated but when I contacted Martin about these tops their recommended glue was medium ca glue. Never had one fail on me. White glue and epoxy have failed according to others I have spoken to but I haven’t tried them personally. I would contact Martin directly yourself to be sure. Good luck and please share what you find with us



These users thanked the author CraigG for the post (total 2): Goodin (Tue Jan 18, 2022 7:33 pm) • Hesh (Tue Jan 18, 2022 2:37 am)
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PostPosted: Mon Jan 17, 2022 1:00 pm 
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Hesh wrote:
Smylight wrote:
Thanks Hesh. I get it.


Pierre
Guitares Torvisse


I'm being politically correct :D Yep me....... :D :? :D Hope you are doing great Pierre!!!

Yes I am! We're in the middle of a snowstorm up here and the doggies are more than pleased about that!


Pierre
Guitares Torvisse



These users thanked the author Smylight for the post: Hesh (Sat Jan 22, 2022 6:03 am)
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PostPosted: Tue Jan 18, 2022 6:14 pm 
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CA is what is was told from the factory along time ago! although they were using a 3m branded CA. ive used every kind of ca for these and never had one come back.



These users thanked the author Lou Thier for the post (total 2): Hesh (Sat Jan 22, 2022 6:03 am) • Goodin (Tue Jan 18, 2022 7:33 pm)
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PostPosted: Tue Jan 18, 2022 7:43 pm 
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Whoa, CA glue. How do you go about clamping the bridge using CA glue with the extremely short open time? Or don't use clamps and just press hard and hold it in place until it sets? Also how do you deal with squeeze out? That stuff just does not clean up.



These users thanked the author Goodin for the post: dbbrantley (Wed Apr 20, 2022 11:58 pm)
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PostPosted: Fri Jan 21, 2022 4:34 pm 
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Goodin wrote:
Whoa, CA glue. How do you go about clamping the bridge using CA glue with the extremely short open time? Or don't use clamps and just press hard and hold it in place until it sets? Also how do you deal with squeeze out? That stuff just does not clean up.



easy! 1st make sure to use good CA! make sure both surfaces are degreased. use just enough CA to cover the bottom of the bridge so there will be minimal squeeze out. glue it like you would with regular clamps and wood glue making sure to clean off any squeez out with paper towels. with the bridge clamped, you can use acetone to clean off the CA that has been left behind after clean off and has left a mess on the top. you dont have to worry about the acetone melting the top as it is melamine or whatever. NOTE : THIS IS SOMETHING YOU CANT DO ON A NITRO FINISHED TOP!!!! it may take a couple passes to get the top clean. ive even used zip kicker to rush dry these, but i think its better to let them dry naturally just my 2 cents!



These users thanked the author Lou Thier for the post (total 3): dbbrantley (Wed Apr 20, 2022 11:59 pm) • Hesh (Sat Jan 22, 2022 6:04 am) • Goodin (Fri Jan 21, 2022 7:56 pm)
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