I had an 1180DC with a case like that one, same sort of damage too. I used Band-It veneer, it comes in rolls of various widths and woods. It has hot melt glue on one side, just iron it on, trim and sand to a good fit. I stained the new veneer, and refinished the whole case with satin poly, turned out pretty nice. Be careful if you sand the whole case, use 220 or 320 grit to just knock the gloss off the finish, the veneer is really thin.