U Will Need A Solid Block Of Metel,& A Hammer + A Towel To Cover The Dented Area Of The Playing Surface,Hold The Metal To The Dented Area Of The Playing Field & Tap Lightly From The Bottom Of The Board With The Hammer,Only Tap The Area That The Metal Is Pressed Up Against & Make Surs To Keep The Towel Between The Board & Metal Block So It Will No Harm The Playing Surface.