I’ve had my 'forge for around a month and a half now, and over the last few days it’s been acting peculiar. At first it just stopped cutting proofgrade material reliably. I’ve needed to do multiple passes for cuts for a while now, but I assumed it was just warped boards. However, today my machine began to experience the need to stop and cool (never done that before, even on 3+ hour jobs) and the smoke began to exit the machine from the interfaces around the front of the lid and the front door. It also started flashing a yellow button light when a job completes, but not during the job.
Finally, I noticed imperfections on the… well I’m not sure what to call this. It’s the primary lens that the laser passes through as it enters the head. So, laser comes out of the carries on the side (out of general view) and passes through the tinted window on the left side of the head. That side lens is the one I noticed imperfections in, and I’m quite certain they are new, as I inspected that part specifically when I put the machine together. Is degradation of this lens expected? I suspect it isn’t part of the heating problem, but it could be part of my cutting issue.
Is there a way for me to clean the exhaust system, aside from the general “vacuum into exhaust port” thing? I think the headsink may have material in it preventing the convective heat transfer, but I don’t see a good way to get at it.