I use the jtech 1.7w laser kit on my mpcnc. I use the “usb cnc controller” from buildyourcnc.com so I can trigger the laser with the flood coolant command. I attached the laser to the spindle mount, I run the spindle during lasing because it has a fan on it thaT blows perfect onto the laser. A small desk fan helps keep too much smoke from effecting the laser and also cools the laser diode. Some simple gcode edits turns routing code to lasing code quick.