I am hoping someone can give me a recommendation for a better wood putty. I have been using the Timber Mate water based wood filler. The problem I find with the Timber Mate is that it is not hard enough after it dries. You can basically rub it off with your finger, as if your finger was sandpaper. For me, this makes it hard to use because it is extremely easy to over-sand and even just handling a piece of wood will wear it off. I would like to find a putty that has more staying power. Something that dries hard and is sandable, but doesn't just rub off. Any suggestions?