My K40 was starting to reduce its cutting performance the last 2 days. I decided to do a beam alignment just in case things were a bit out of wack. I didn’t adjust anything yet, but instead of getting a nice fine pinhole when I press test I got what looks like 2 lips about 4mm wide.
The is even from tape on the first mirror next to the laser so the issue is before the mirrors (i.e. the laser tube).
Any ideas? Does the laser tube have an internal lens that may have gone astray or is it on the way out?
Thanks in advance.