I'm building some shelves/cabinets in a mudroom, using cheap plywood. I did my best to clean up glue (Titebond 2) squeeze out and drips but missed a few or didn't get them wiped up as well as I had thought. Basically, glue stains, not clumps which could be chiseled off. While this isn't fine furniture, I'd like to remove what I can before finishing with something like a clear polyurethane. I'm worried that sanding will remove the veneer on the plywood (like I said it's cheap, so the veneer is probably quite thin). I've done a few searches but haven't found a consensus other than sanding. Any suggestions?