Here’s a little tool I use to remove excessive glue from joints that has worked quite effectively for me. You simply cut the end of a plastic drinking straw at an angle, then pinch the point together slightly to make it easier to reach the bottom of the joint. Push the angled tip of the straw along the bottom corner of the joint to scoop up the excess glue. Once the glue dries you can usually just push it right out of the straw; if not, just cut off the end again.
