I need to repair a window sill that has some rotted wood and read an interesting piece today in the letters section of the most recent issue of This Old House Mag. The writer mentioned a previous article that talked about Bondo and suggested that it wasn't great for wood repairs since it doesn't expand/contract with the wood. He suggested a procuct called Flex-Tec. I went to their website and it looks quite interesting. Have any of you used it?
--Rob