At 10:13am Watertown Fire Rescue was called to Dakota Bodies for a piece of equipment that was on fire.  Crews were directed by workers to the north east corner of main building.  Entry was made through a walk through door to find a large Laser Cutter on fire.  Electricity was cut to the machine.  Crews rapidly extinguished fire and checked for fire extension.  Fire was also found later in a filtering machine next to laser cutter.  Gained access to filter machine and extinguished fire.  Removed all smoldering pieces of filter assembly.  Crews remained on scene for just over a hour.  No injuries were reported.  Laser machine a total loss.  Watertown Fire Rescue was assisted by Watertown Police Department.