There’s nothing more frustrating than finding glue spots on your latest project as you apply stain or finish. And the old saying about an ounce of prevention definitely applies here.
Glue on your fingers, “squeezeout,” and drips are common causes of glue spots. The problem is the glue is often nearly invisible when it dries. And once on the surface, the glue seals the wood grain preventing the finish from penetrating. This leaves glue spots, like you see here.