I just had a pretty major laser fire. The fire started on the inside of a jig I made to hold wood for cutting. It must have been burning on inside for several minutes before I noticed it.
When I noticed something was wrong there was no fire just more smoke than normal I opened the lid of the laser and it erupted in flames. first I tried to beat and blow the fire out. When I realized that wasn't going to work I grabbed the fire extinguisher. Even though the extuinguisher was only 6 feet away that extra time allowed the fire to get much bigger(I also forgot to pull the pin on the extinguisher before trying to spray it, so that added time to).
In the aftermath it the x&y controls still appear to work. The x belt is melted, the plexi in the lid is charred through. The entire shop is covered in soot. I am waiting for the lens to cool so I can clean them and see if they were damaged. There are two ribbon strips that are partially melted but the electronics appear to work so they may be ok.