Nevets posted:

If you get lucky like I did you'll get a laser that doesn't need any calibration, all the parts included and works just fine with Windows 10. But since these are all knockoffs of knockoffs with little quality control there isn't really any way to guaranty you get a good one even if you buy yours from the same distributor I got mine from (Orion Motor Tech). If you are willing to risk having to spend some time learning how to align the mirrors, etc. I'd say you've got a pretty decent chance of getting one that works out of the box or just needs some minor adjustment.

As far as capability goes, it will etch or cut paperboard like no tomorrow. I'm holdinging off on playing around with wood and acrylic until I get my air assist and exhaust system upgraded, but I've lasered a few sheets of very thin cardboard:



I'd say this piece was about 0.5mm or a little thicker, with the power dial turned down as low as I could and still get a beam out of the tube. The first engraving is barely etching the cardboard, the last one is so far through you can see light through the engraved portion.