I have a Brazilian made DiGiorgio classical on the bench...It has multiple back " cracks " that are erupting across it...At first , I thought they were regular cracks , but on further inspection they are the top layer of the laminate peeling up..Rather large areas ( one is almost hand sized )...It's the kind of thing that makes you think of water damage , but there is more than zero evidence of it being water damage...I can easily make the " eruptions " go back down and mate up nicely...My basic plan is to inject with the proper thin glue...I'm hoping I can use titebond , thinned enough to flow where it needs to go....Any thoughts ?

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Hi, my first thought was to work out a camping method, and cauls to match the back radius so that the laminations can be firmly held together whilst the glue is setting. 


Use Old Brown Glue. When heated up, it gets nearly water thin and can get in to all the tight places.

That's a new glue to me...Thanks !

It might be worth figuring out what glue was originally used for laminating. If you introduce a little water, you should be able to tell hide glue by smell. That would be the ideal case, because adding a little thinned hide glue will reactivate the original.

Can'tthink of a way to find that out.....Company no longer around...

I’d start in a small area; introduce a few drops of hot water with a syringe, squish it around a bit then clamp flat for a day. If the loose area stays down you’re dealing with hide glue.

Ahhhh.......( I can only smell cooking turkey, pot and Bacon....)...Although....Do you think anyone would use hide glue to laminate a plywood on an inexpensive guitar from Brazil ?....( My logic side here )...

Possibly made by a manufacturer of plywood company and the guitar builder.



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