Problem Statement: Water protects the laser tube from overheating.  We need to test water is flowing ( 2 gps) and it’s temperature is safe (less than 35 °C/95 °F).   Solution: Water cooler Thermoelectric Cooler here: Temp Fan RPM Water RPM here (or DIY here, you need to add the sensors.) Water Temperature here:

Problem Statement: The K40 delivered is as cheap as it can be for the producers to make money, and with many safety hazards not addressed. Three options: Buy a more expensive machine. Adjustments, upgrades and modification. Accept it for what it is. (This is a work in progress, updates will be made over time. 04/12/2020)

Problem Statement: The K40 control panel works by showing a percentage of the laser power.  But this does not include how many milliAmps are actually used.  Real risk of  damaging the laser.  This enhancements will make a useful panel.     Solution: Replacing the control panel will require other modification: Items to display Cabinet Lights