???? These were NEW panels, clamped up.Originally Posted by Bob Smalser
How is an old joint glued with PVA repaired?
You steam the piece apart and pare away all the old PVA back to clean, bare wood. Then you get to make a new joint....in a piece you can get completely apart you can either do a floating tenon or plug and recut the mortise slightly smaller and pare the tenon to fit...or if it won't come completely apart you can use veneer shims (inferior).
Sure, you can use thickened epoxy that'll fill the loose joint, but that introduces a separate set of problems in dismantling. Epoxy joints are wrapped in linseed-soaked rags to protect the finish and put under the heat lamps for the 45 minutes it takes to heat the joint then you pound it apart with a rubber mallet. Once you get it apart, the epoxy reglues very well after sanding, but dismantling is unreliable and difficult.
In a valuable old piece of furniture worth saving, you'll often find several different flavors of homeowner-grade glue and brad repairs in otherwise excellent joinery that make conservation work so much fun.
And modern woodworkers, of course, are taught to introduce these unrepairable products into their work from the getgo.
The thought of a "waterproof" PVA glue I can't break apart easily with steam makes my teeth itch.
Yup....but your Granddaughter or Greatgranddaughter probably won't be when somebody like me tells her the piece can't be saved economically.
I was just telling my first experience with the new titebond 3.
Steve
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