Hi I have a k40 chinese laser engraver and I have been trying to align the beam as I got new reflective mirrors. I can't figure out how to align the second mirror. When it's closets to the tube I set the beam to the centre of the mirror but when I move it far away the beam is now off the mirror bracket to the left. If I set the beam here and move it faward the beam is no longer in the middle. How do I align the mirrors? Any help please.
Thanks Dom