Darryl Keil Last Activity 2026-01-12 8:29 AM
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Matt

 
Subject : Dalmination
Posted : 2003-09-05 3:02 PM
Post #30966
I just glued some oak paperbacked veneer to some Baltic birch plywood in a vacuum press using Titebond II. When I removed the piece I had a large bubble of about 16"x16". I soon released that the bubble was not between the veneer and the plywood but that the first two layers of the Baltic birch had delaminated in the press. The plywood was fine prior to pressing and I am at a loss to explain how this has happened. I find it difficult to believe that air could be sealed that well inside the birch plywood. Any thoughts or ingenious ideas on how to fix it would be appreciated.


 
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Darryl Keil

Posts: 1456

Joined: 2003-05-22
Location: Maine

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Subject : RE: Dalmination
Posted : 2003-09-05 8:48 PM
Post #30968 - In reply to #30966
Matt,

Even though the plywood looked fine before you pressed it I doubt that it was. The moisture in the glue helped to swell the first layer of plywood revealing what was already there, an area of poor adhesion.

Because of the extra layer it will be hard to repair. Slicing it open enough to get glue in will make a unsightly cut in your face veneer. About the only thing I can suggest is to get a coarse hypodermic needle that could penetrate both the veneer and plywood. Do it on a low angle so the glue will spread out in the bad area. For such a large area you may have to make a couple of entry points.

Sincerely
Darryl Keil

Sincerely
Darryl Keil
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