Hey, I just came across this post about converting a Mini to a laser head. 
Neat! I wonder how much a laser rig like that would cost? Excluding the printer
I converted my old Flashforge Creator Pro with one of his 2.8W kits. Replaced the left extruder with a laser. He has been working on a 5W diode, or at least was working on one. I eventually plan on adding a laser to my Taz 5.