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Looks like it may just be mechanical. According to this article, if true, you can rehydrate white glue with water and heat. https://simpleglue.com/how-to-revive-elmers-glue/
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Looks like it may just be mechanical. According to this article, if true, you can rehydrate white glue with water and heat. https://simpleglue.com/how-to-revive-elmers-glue/