Hi all,
I've had my second hand JSM6540 Chinese laser cutter for about a year now, and this week it's decided to do something weird. It doesn't cut properly on lines or curves that are on the X-axis (horizontal). I've rotated the image 90 degrees to check and it's still the X axis (different lines now that I've rotated the image) that doesn't cut. It cuts most of the way through, but not as good as the Y axis which is perfect. Curves that start on the vertical/Y axis cut ok until they hit the horizontal/X axis and degrade.
It happens no matter where on the worktable I am cutting. I've checked and cleaned the mirrors and replaced the focal lens. I've checked that the laser beam is as near centre on the focal lens as I can get it.
I'm cutting 1.8mm chipboard.
Stumped! Any ideas?