ok ok,,,Fine, I'll tell you about it
this laser module did not fit the heat-sink I have. it took a bit of drilling to get it to fit,,,but it was worth it. this thing works GREAT.
I did have to switch the wires around to get it to work. and i also added a buck converter (12-40V to 5V). I burnt out my old laser module by using 12V on it(((( what a dummy)))).
I don't know it the laser is truly 1500mv or not but it burns a awesome smooth line. nice crisp clean line, about .5mm wide.
would I recommend it? YES, enough to buy another one for myself.( always good to have a back up).
Verified purchase: YesCondition: New