Want Pencil Lines Erased Without a Trace? Try Alcohol
The next time you make a pencil mark that you don't want to sand away or remove with an eraser, try denatured alcohol. Soak the corner of a rag in alcohol, and rub the rag across the pencil line. The alcohol will remove the pencil mark and not leave any residue to affect the finish.
—Russell Marooney, Odessa, Texas