The one thing K40 owners Love to do is align their optical mirrors. :roll_eyes: To make the process a little easier here are a couple of guides to assist you.
HP Perrson has a good guide on his site.
Here is anot…
Here are some pics showing the proper orientation of a plano-convex lens (curved side towards the laser) and the effect of different focal lengths.
K40 machines typically use Plano-convex lenses with a 50.8 mm (2") foca…