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adhesive from 19781/11
We have about 10,000 pounds of red oak and poplar woodwork in the shop, originally made in 1978, refurbishing it for re-use. Everything is glued together with a super hard, extremely brittle white colored glue that, if any old squeeze-out gets chipped, it will cut one’s hand like glass. The big concern is that it is so brittle that a sudden shock, like a glued up board falling on the floor, will cause the long grain glue joint to shatter along the whole length of the board.
I cannot comment on the type of glue that this is since I was born the same year that those items were first glued up.
However, I would not worry about the shock strength. If you have 10K pounds of this stuff, you should have enough to test your theory on, toss it from the roof onto the sidewalk and see what happens.
Most likely the wood itself will blunt the shock enough that it's not going to hurt the glue joint.
The only glue, epoxy, or resin that I've ever used that I would have any "concern" over regarding breakage due to something like being dropped would be CA glue. But even then, I doubt the shock would do it, but just being bent/forced in a way that stresses the joint.
What's the conversion from pounds to board/ft?
Miters, butt joints or stile/rail joints could be of concern. Any glue is stronger than the long grain. When tested the wood always fails next to the glue joint in edge glued samples.