That's a great Idea. BTW I installed the beam combiner and noticed that it takes more power to produce a result on the paper, the mirror is suppose to have a 99.9% transmittance. What happens is I get a ring on the paper before I get a black dot, very weird compared to what I was getting with-out it before. I also looks like I made need to increase my focal length because of the shape of my cone in the cutting head I made, I think the IR will hit the sides.