Very true! if you want proof of this go see the things some of the kids make in high school wood shop. Everywhere they leave glue you can see it very clearly. I know because I was one of those kids that though........ aagghhh, a little glue won't hurt nothin'......Wood glue won't take stain very well, if at all. You can varnish over it, but it just won't absorb stain.