When I've finished building a rocket and I'm preparing to prime it, I find I usually have little lumps of excess wood glue--fingerprints, drips, etc., that are small enough to be almost invisible before painting, but big enough to be noticeable under primer and paint, especially if I apply a glossy finish. Wood glue doesn't sand all that well. I can scrape it off with a hobby knife, but it's easy to accidentally gouge paper or balsa, leaving a bigger blemish than I started with.
Do you have a better technique?
Do you have a better technique?