5W UV Engraving inside glass doesn't fill

[Aaron.F (Aaron)]

of course, the correct focus height is paramount here

I’ve just added a note about this on your other thread:

JPT 5W UV Galvo Laser not engraving

Thanks for the pictures. the two circled assist lasers are only used for focusing the beam. You would move the Z-Axis until the red dot and the pointer through the lens converge. Ideally, that’s where the focus is, but this depends on the mounting angle of those assist lasers! I recommend focusing by eye and ear first (move the z-axis during a job until the effect on the material is the strongest) Then check if that’s also where the two dots are aligned. If not, loosen the bracket of the…