Save Old Wood Glue

What to do when wood glue gets too thick

Pouring vinegar into glue | Construction Pro Tips

I once heard that mixing in a drop or two of vinegar helps thin wood glue to that has gotten too thick to use. It sounded like an old wives’ tale, so I wrote to the Borden company (maker of Elmer’s), asking what they suggested. Believe it or not, they suggested dropping in a drop or two of vinegar. What do you know…