X and Y has changed on controller

[ednisley]

@daddycreswell

sudden started engraving poorly

Run this test pattern as fast as it will go, with optimizations turned off, with the power set to mark cardboard:

GrundTest.lbrn2

Any distortion in the results on the cardboard indicates a mechanical problem.

Assuming that works OK, then what you’re seeing is almost certainly due to misaligned or loose optics.

@daddycreswell

they have been out of alignment for a long time to be honest

The doubled lines for small vertical strokes looks very much like the beam splashing off the inside of the nozzle and producing a pair of lines, one weaker than the other. The slight widening of the circle around the pattern agrees with that; the splashed line is covered by the thicker pattern.

If that’s not it, then you’re looking at a failed tube resonating in a mode that can’t produce a well-focused spot. Some recent discussions show the beam shape and go over the test process:

RDC6445 Install Question

This should be a round burn the size of the output beam… The Gaussian power distribution should is represented like this… [The-distribution-Gaussian-of-laser-beam-profile-nb] Since we are looking at in from the Z direction… this is more like what you should be getting… [power-distrution-2d] Dark in the center getting lighter as the beam power decreases. It should be round or it can’t have this power distribution. Is this a new tube?

Lost of power on our Reci W6 tube?

For the lasing to occur the tube has to be at resonance to properly lase. If these fields change, the beam is no longer powerful in the center with the power getting less to the outer edge. This is my tube going south… you can see the power is mostly on the right and there is no power in the lower center. [tem-failure-crop-target] I had cut some thick acrylic and I always run through an alignment before the job. That was a Friday and it was aligned in < 5 minutes. The m1 target was dead …