I am wondering if it is possible to restore pencil marks that have been erased (washed away using a cleaning sovent) from a wood paneled wall. Is there some sort of chemical that interacts w/ graphite, that when applied to the wall would return all the old marks that were once there. The marks were all old (some marks were made 30 years ago, some as recent as a few months ago). Any information on this would be much appreciated.
Thanks