Even with my large routers I do multiple passes when I do most of my cuts. Keep this in mind. You should not cut at a depth thats more than the width of your bit. Also keep in mind that you will probably be using some sort of sacrificial board if you are cutting all the way thoough, so you have to add that to the depth as well.

Your set up will have to be perfect so I recomend practicing the cut on scrap. I own a colt and even though its rated at 1/HP there is no way it holds up to other 1hp routers.