Just finished a partscaster. This lifesaver tip for me came from Dan Erlewine's excellent book. You can easily steam dings out of bare wood by placing a damp rag over the spot and touching with the tip of your soldering iron. I dropped our sanded and sealed body on the asphalt driveway and it looked pretty bad - I thought my poor son (father/son project) might not survive. After a little steaming and sanding it looked new and we were actually able to use the body with a clear finish.