Richard and I performed some preventative maintenance on the laser cutter:
Used windex to clean all the viewing ports
Vacuumed all debris out of the bed
Tightened up the head assembly belt and the set screws on the pulleys
Cleaned the ways with WD-40, then lubricated with oil
Oiled all bearings and bushings
Removed broken key from front cabinet lock
Cleaned mirrors and focal lens with optical wipes and alcohol
Aligned mirrors