Kerf is way thicker at top left corner (closest to emitter) Power density issue?

[Stroonzo (Jeff)]

I meant to link to this as well:

Mirror alignment tool

Red laser up through the lens holder in a snug adapter is the most amazing way. Someone had mentioned it on the forum a few weeks ago. I’m going to fog the room with a fog machine because as @Dave01 mentions, PARALLEL is so critical. And understand it is parallel in all directions. Why parallel is so important is because when x or y is jogged and the distance between the corresponding mirrors changes, being out of parallel means the overall end point of the beam is moving (left, right, up, or…