Laser cutting slanted

[Fernando Moreira]

My laser only cuts straight on one side. If, for example, I cut a square piece, the left side is right, with a cut almost perpendicular to the table, but on the other sides, the cut is slanted.
I've lined up all the mirrors the best I could ...
Can someone help me? What could be wrong?

Tks

[Dave Vigness]

Sounds like you are either not parallel in Z, or you are off center in the lens tube / on the lens.

[Pete Cyr]

are you sure the bed is parallel to the gantry

mount a piece of wood or a 6" steel ruler to the laser head so that it is perpendicular to the gantry and about 6mm from the bed

Move the laser to each corner of the bed and check the clearance - if the clearance changes the bed is not parallel to the gantry and you will need to fix that

[Fernando Moreira]

I have checked the Z, and the head seems to be perpendicular to the bed, and the bed is at the same distance of the head on the four corners. I also checked that the beam is on the center of the head...

[Rodney Edington]

I also checked that the beam is on the center of the head...

This may be your problem. Have you made sure the beam is centered in the lens tube??? On most heads you'll need to be a little low from center on the head coming from mirror #2 to get the beam centered in the lens tube.


Have you watched these two yet??

https://www.youtube.com/watch?v=w9v3Vs0Nbkw


https://www.youtube.com/watch?v=Vl6QKlwRKlk&t=1207s

[Doug Fisher]

Do you have good test results when you do the anal thermometer test?

viewtopic.php?f=105&t=3480

[Fernando Moreira]

OK guys, thank you for your help, I will check the videos, and try to act in accord to...
I'll let you know the results...