LASER TREELaser Engraver Module, 4000W(4W) Optical Power Laser Head, Laser Engraving Cutting Module, Adjustable Focal, Laser Head for Laser Engraver Machine DIY Wood Paper Leather etc, Class 4

This little powerhouse gives you that extra kick needed, with a pwm module it is very tunable, has an awesomely tight focal point, and even at 100% power stays relatively cool and the forward air flow through the heatsink/body pushes smoke away quite easily, for less than $60 I doubt you're going to find better, at least in a DPSS laser module.I've wandered between 5mw up to 50000mw over 40 years of laser experience, and an important thing to know is that the laser, although I have not officially tested it, is kicking out the 4, 000mw it claims, and might even be a little closer to 5 or6,000mw, it's power output from my experience tells me you're getting exactly what they advertise, and perhaps a bit more.I consider it an excellent purchase, but with one caveat, this needs to be run with a pwm module, if not, you can wire it directly to your power supply,(Whether that be a 12 volt plug in adapter or a regulated power supply) no harm will come to the laser from this type of hookup. This is perfect for the laser enthusiast who does not intend to engrave with it and wants to hook it up directly to a 12 volt DC power source, I suggest using one that is rated at 3 amps or better.One final thought, if you wish to connect it directly to a DC power supply you must also connect the pwm module lead, (yellow) to the positive, (red) lead to get it to function, just remember if you do this it runs at 100% power all the time, but won't hurt the module.To simplify, you will have to cut off the connector of your power supply, and one end of the three lead red-black-yellow connector cable and solder those two together cables together, so basically you have a black to black connection, a red to Red connection, with the yellow lead also connected to the red to red connection. Simply plug in the connector to the laser module, then plug in the adapter, I suggest using shrink tubing on all solder connections. Watch out though, at 100% power even if highly unfocused at 3 to 5 ft will cause painful burning on your skin within seconds.

Fired right up, better than expected for the money, i bought this to attach to my cnc machine, easy to adapt on my build

First laser did not work at first - found loose plug on laser - plugged it in - worked but then stopped working halfway through small laser engraving.Worked through troubleshooting with Laser Tree - they sent a replacement and it seems to be working well.

Very versatile

Received laser on 11/25/23 hooked it up did a power/speed test never went over 50% power worked great went to get a bite to eat came back and now it acts as i cant get it to focus i guess just another laser to throw in the garbage i wouldnt buy again.

Easy installation, simple to connect. I have an old FoxAlien laser that the module gave up. I ordered this module as a replacement. It was a simple matter, four Allen screws and one cable. Just unplug the old one, remove the screws holding the old module, unplug the cable st the top of the module. Then use the four screws to mount this module, plug in the cable and you are back in business!

This performs exceptionally well! The four tapped holes on the back make mounting super convenient. My Genmitsu CNC mount wouldn't fit the laser, so I just drilled two diagonal holes in the carriage of my machine to meet the holes on the laser module. While the wiring wasn’t arranged correctly for my machine, it was an easy fix using tweezers to adjust the JST connection.After approximately 20 hours of use, I haven’t encountered a single issue. This is a reliable and well-designed laser module for engraving and cutting projects!

The single caveat is that it measures 35mm on a side instead of the standard 33mm, so you may have issues attaching it to some carriages-definitely on a Genmitsu 3018-pro. It wasn't a deal breaker for me, because I created & 3d printed a bracket for it. Also, I had a small problem with the laser not turning on initially. However, their excellent customer service worked with me to diagnose & fix the problem..turns out the yellow and black wires were switched at the plug. After 2 minutes spent switching them I was in business. Thanks again for the help, guys!