I have a fairly large (2 oz) bottle of "Original Gorilla Glue" which has been sitting on the shelf. I used it once or twice occasionally, but now it has gotten somewhat hard and crystallized and won't come out of the bottle.
I bought the big size with the nice cap hoping it would last for dozens and dozens of projects, and indeed the bottle is still like 95% full. But it's all stuck inside. Is there any way to re-liquefy or soften Gorilla Glue?
Perhaps there's some solvent that evaporated away which I can replace? (Water is probably a non-starter, since that is what typically activates it.) Did it just somehow crystallize more like honey and perhaps heating it would turn it back to a liquid I could squeeze out? Or are these bottles just meant for busy builders who would use it all within a few weeks/months?
Best Answer
You are out of luck. Gorilla Glue is a polyurethane glue. Like most modern glues, it cures chemically rather than drying out or setting by cooling. Unfortunately, yours has cured in the bottle.
Other than the obvious tip of putting the cap back on tight when you're done, I haven't found any effective way to keep Gorilla Glue for a very extended period.