Gluing help please.

Talk about musical instrument construction, setup and repair.

Moderators: kiwigeo, Jeremy D

Post Reply
David Herring
Beefwood
Posts: 25
Joined: Tue Nov 09, 2021 4:49 pm

Gluing help please.

Post by David Herring » Tue May 10, 2022 10:14 pm

I am currently restoring an old Onyx electric accoustic guitar. It has a fibreglass body ( like the old Ovations) and A wood plastic laminated top. The wooden bridge has popped off easily and I'm not sure what is best glue to use to replace it. The top has quite a dip at front and hump at back. Top is very rigid and I suspect brittle and I dont think a bridge doctor will move it. Any suggestion please?

User avatar
56nortondomy
Blackwood
Posts: 616
Joined: Sat Jan 14, 2012 11:56 pm
Location: Melbourne western suburbs

Re: Gluing help please.

Post by 56nortondomy » Wed May 11, 2022 4:31 pm

Sounds like maybe an epoxy job David, someone else might have an idea.
Wayne

David Herring
Beefwood
Posts: 25
Joined: Tue Nov 09, 2021 4:49 pm

Re: Gluing help please.

Post by David Herring » Wed May 11, 2022 4:43 pm

Thats what I was thinking Wayne although others dont favour epoxy on bridges in case they have to come off again. Not sure if titebond will stick to plastic.

User avatar
kiwigeo
Admin
Posts: 10246
Joined: Sat Sep 29, 2007 5:57 pm
Location: Adelaide, Sth Australia

Re: Gluing help please.

Post by kiwigeo » Wed May 11, 2022 7:02 pm

It'll stick...for about as long as it takes to undo the clamps :)


David Herring wrote:
Wed May 11, 2022 4:43 pm
Thats what I was thinking Wayne although others dont favour epoxy on bridges in case they have to come off again. Not sure if titebond will stick to plastic.
Martin

David Herring
Beefwood
Posts: 25
Joined: Tue Nov 09, 2021 4:49 pm

Re: Gluing help please.

Post by David Herring » Wed May 11, 2022 10:13 pm

Thanks Kiwigeo. What do you suggest?

User avatar
56nortondomy
Blackwood
Posts: 616
Joined: Sat Jan 14, 2012 11:56 pm
Location: Melbourne western suburbs

Re: Gluing help please.

Post by 56nortondomy » Thu May 12, 2022 4:21 pm

Epoxy on bridges isn't ideal but sometimes it's the only option, I've used it on bridges a couple of times when I've had to. I think in your situation your options are pretty limited. Wayne

User avatar
kiwigeo
Admin
Posts: 10246
Joined: Sat Sep 29, 2007 5:57 pm
Location: Adelaide, Sth Australia

Re: Gluing help please.

Post by kiwigeo » Thu May 12, 2022 5:22 pm

David Herring wrote:
Wed May 11, 2022 10:13 pm
Thanks Kiwigeo. What do you suggest?
If the top gluing surface is plastic then epoxy is probably your best bet. Not ideal for wooden tops as when there's a bridge failure it rips half the top in the process. A plastic top is a different scenario.
Martin

pkdz
Gidgee
Posts: 2
Joined: Tue Nov 17, 2015 12:18 am

Re: Gluing help please.

Post by pkdz » Thu May 12, 2022 9:31 pm

I would be tempted to use medium CA glue.
This is from another forum to glue a bridge on a Formica top:
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!!!

Paul

User avatar
Allen
Blackwood
Posts: 5223
Joined: Thu Oct 11, 2007 5:39 pm
Location: Cairns, Australia
Contact:

Re: Gluing help please.

Post by Allen » Fri May 13, 2022 6:01 am

I'd also suggest the medium or thick CA. It is what Rich Turner used for gluing bridges to his Polyester finished instruments for years.
Allen R. McFarlen
https://www.brguitars.com
Facebook
Cairns, Australia

User avatar
kiwigeo
Admin
Posts: 10246
Joined: Sat Sep 29, 2007 5:57 pm
Location: Adelaide, Sth Australia

Re: Gluing help please.

Post by kiwigeo » Fri May 13, 2022 8:53 am

What's the sheer strength of CA compared to epoxy?
Martin

David Herring
Beefwood
Posts: 25
Joined: Tue Nov 09, 2021 4:49 pm

Re: Gluing help please.

Post by David Herring » Tue May 17, 2022 11:56 am

Thank you all for your suggestions. I went with the epoxy before the ca suggestions came through. What a job even after masking. Anyway all done and restrung now. The electronics looked cactus and I had removed the piezo and made a new saddle to just have the guitar as accoustic. However after fiddling (I know nothing about electronics) I got the thing working again but have a lot of crackling when powered up. I guess after 40 odds years of dust it's not surprising. Any suggestions on a cleaner that wont cost me an arm and a leg. I mostly fix up classical guitars so wont need much. This guitar has had a lot of use. Grooves in the frets and troughs in the fretboard so I guess at some stage it must have sounded Ok

David Herring
Beefwood
Posts: 25
Joined: Tue Nov 09, 2021 4:49 pm

Re: Gluing help please.

Post by David Herring » Tue May 17, 2022 12:03 pm

pkdz wrote:
Thu May 12, 2022 9:31 pm
I would be tempted to use medium CA glue.
This is from another forum to glue a bridge on a Formica top:
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!!!

Paul
I think I will try ca next time Paul. How do you pick a nitro finish. With my limited skills they all just look 'shiny'?

User avatar
kiwigeo
Admin
Posts: 10246
Joined: Sat Sep 29, 2007 5:57 pm
Location: Adelaide, Sth Australia

Re: Gluing help please.

Post by kiwigeo » Tue May 17, 2022 12:35 pm

David Herring wrote:
Tue May 17, 2022 11:56 am
Any suggestions on a cleaner that wont cost me an arm and a leg.
Any contact/pot cleaner should do the job. Whatever you do don't use WD40 or other "cleaners" high in distillate and other nasty solvents.
Martin

pkdz
Gidgee
Posts: 2
Joined: Tue Nov 17, 2015 12:18 am

Re: Gluing help please.

Post by pkdz » Tue May 17, 2022 1:35 pm

David
I would try a very tiny bit of acetone under a tuner.

Paul

User avatar
kiwigeo
Admin
Posts: 10246
Joined: Sat Sep 29, 2007 5:57 pm
Location: Adelaide, Sth Australia

Re: Gluing help please.

Post by kiwigeo » Tue May 17, 2022 7:44 pm

David Herring wrote:
Tue May 17, 2022 12:03 pm
How do you pick a nitro finish. With my limited skills they all just look 'shiny'?
http://www.frets.com/FretsPages/Luthier ... etest.html
Martin

David Herring
Beefwood
Posts: 25
Joined: Tue Nov 09, 2021 4:49 pm

Re: Gluing help please.

Post by David Herring » Thu May 19, 2022 11:57 pm

pkdz wrote:
Tue May 17, 2022 1:35 pm
David
I would try a very tiny bit of acetone under a tuner.

Paul
Thanks Paul.

David Herring
Beefwood
Posts: 25
Joined: Tue Nov 09, 2021 4:49 pm

Re: Gluing help please.

Post by David Herring » Thu May 19, 2022 11:58 pm

kiwigeo wrote:
Tue May 17, 2022 7:44 pm
David Herring wrote:
Tue May 17, 2022 12:03 pm
How do you pick a nitro finish. With my limited skills they all just look 'shiny'?
http://www.frets.com/FretsPages/Luthier ... etest.html
Nice link Martin. Thnks

David Herring
Beefwood
Posts: 25
Joined: Tue Nov 09, 2021 4:49 pm

Re: Gluing help please.

Post by David Herring » Fri May 20, 2022 11:20 am

[img][/img
All finished and ready to go to a good home. Had not seen an Onyx before but looks like Ovation copy. Fixed all the crackling with cotton buds and Kleanium contact Kleen. Bridge is glued and not pretty but solid. Thanks everyone for your help.

David Herring
Beefwood
Posts: 25
Joined: Tue Nov 09, 2021 4:49 pm

Re: Gluing help please.

Post by David Herring » Fri May 20, 2022 11:46 am

Image
Attachments
Onyx_0.jpg

Post Reply

Who is online

Users browsing this forum: maurie and 33 guests