Heat gun to the rescue

We all know that a heat gun will fix a foam blank ding. Well the other day I hit the rail of a bottom lammed only board and put a 3/16th deep ding in the rail. Then I thought maybe the heat gun might work even on this ding, Well guys it did, brought it right back to what it was before I hit it. Now I’m wondering if it would work on a ding on a finished board, Definitly would make a difference when it comes to filling the hole. Aloha, Kokua