I've been keeping myself pretty busy for the last few weeks but unfortunately for you guys my laser cutter has now developed a fault. For a long time now my laser has been playing up, it appears to be a problem with data corruption between my PC and the laser. Files can cut fine one day but download it again and the laser fails (in the on state) and draws a line right across the piece I'm working on. Well in between those failures the machine has developed a second fault. The insulating shield on the laser tube has now failed. Large sparks were jumping from the tube straight to the laser case. Obviously this is not a good thing and the laser stopped cutting anyway so I investigated and found the smouldering lump of rubber pictured about. I don't know why it did this, but I turned the tube around in an effect to keep running. That worked for a few hours but then it started sparking from the same place. It's not all bad news HPC were coming down to visit my...