Saw the K40 CO2 Laser -= Vitamins =- had a place to add laser diodes but did not have the holders included in the Thing Files. Found one on the site in Dual
...Show more Alignment Laser Pointer for 40W and set it up to work with it. I suggest running a straight pin through the hole for the laser to open it up to the right size. Used the Mini Laser Dot Diode Module Head Red 650nm 6mm 5V 5mW Diode Lasers from Amazon
