First we sanded most of the artwork off then we filled any big holes with timber dowels glued them in with quick dry araldite. Then after using a chisel to trim the dowels we used Selleys two part builders bog to fill the remaining dings and depressions. This bog was perfect for the job. It dried quick and sanded down perfectly. A bit more sanding inside and out and a couple of beers later I was feeling much better about the project. I'm happy with the result, Very smooth and straight. On to the painting next.