Q:Why doesn't glue stick to the inside of the bottle?
A: It does. Open up an "empty" glue bottle and there is always a coating of glue on the inside. If you want tp know why the whole thing doesn't set solid it's very simple. When you use too much glue for something it takes along time for it to dry doesn't it? well in the bottle there is even more and the bottle is generally sealed so that it can't really dry out at all.
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