Thankfully I had workbench space right near a window that made a perfect home. The K40 laser is water cooled. All the lasers include a coolant pump as one of the accessories. The pump I received ...

Having your laser tube water be somewhat close to ambient temperature is something you can already achieve with an aquarium pump and a bucket of water — and it isn’t worth paying $100 for.

The installation of the Laser Defuser was a bit more difficult and reminded me why K40 likes these things to be installed by a pro. Unfortunately my license plate holder isn't removable ...