I need to replace the molding on my exterior wood columns. I don't own or am I handy with many power tools. My columns are standard 8" squares (I've double checked each column & side). I plan to go to the home improvement store to buy the molding & try to get them to pre-cut it. Is there another way I can fasten the molding without since I don't have a finishing/ nail gun? I'm scared I may split it with a regular hammer.