Little Wolf, I'm with Steve. You CAN use a sharp knife and a file if you have to but to do a professional looking job, nothing will beat a router with a sharp laminate trim bit in it. If you make a mistake with the Roto you can't cover it up and have wasted your time and material. Go with the right tool for the job even if you have to borrow or rent one and buy your own bit. It would be ashame to spend all that time and effort and end up with a couple of nicks in it. Good luck.