I purchased a 100W CO2 laser machine a few months ago from Ebay and it has been working fine up until a couple weeks ago. The bed is about 24" by 40". I've tried aligning the mirrors for countless hours and I cannot seem to get the 3rd mirror aligned properly. I am able to hit the first mirror dead center. The second mirror is aligned properly as well (it hits center when in the near-front of the machine and far-back of the machine). The 3rd mirror appears center when the laser head is all the way to the left (near the 2nd mirror). As the laser head travels to the right is when I am experiencing issues. When the laser head is in the far back right (3A) the beam is off slightly towards the outside (back) of the machine. When it is in the close front right position (3B), the beam is off in the other direction, towards the outside (front) of the machine. Hopefully my rough sketch makes sense. I can elaborate more if necessary.
I do not think that adjusting the mirrors is going to help since the beam is going off in opposite directions. I may need to adjust the gantry or other mechanical parts? The Chinese support is less than helpful. Hopefully there is some kind soul here that can help me out before all of my hair is pulled out!
Thank you,
Eric