20W Laser Engraver Module with Air Assist - 20000mW High Power Laser Cutter for Metal, Steel, Wood & Acrylic - Precision Quad-Compression Spot Head with 340+ Color Engraving - Perfect for DIY Crafts, Jewelry Making & Industrial Marking

I bought an Atomstack S10 pro engraver a few months ago and was never satisfied with the performance of their '10 watt optical power' laser head. It worked great for engraving on wood and slate, but couldn't cut 3mm basswood plywood or anything thicker than this - regardless of number of passes (I gave up on 3mm basswood plywood after 5 passes because it just couldn't cut through and the position accuracy on multiple passes was not that good so the cuts washed out and charred to the point of not being usable). So I looked for a more powerful laser. Atomstack and XTool both advertise a 20 watt optical power laser head but both are more expensive than this one and I've only seen the one from Atom stack available in a bundle with their air assist unit. Then I found this laser head, touted as 20 watts optical power and at a better price point that the other two competitors. The only caveats - 1. Absolutely no mounting hardware or bolt pattern information is provided; You must DIY your own mounting system to work on your engraver.; 2. An installation manual is not included in the package but there is one available on line which does give the the dimensions, connections and focusing information; 3. You must fabricate something to mount the laser that also provides the means to adjust the focal point (z axis).So, I fabricated a suitable mount and installed it on my engraver, made the necessary connections to the controller and ran a test. OMG, what a HUGE difference. my engraver finally behaves the way the manufacturer says it's supposed to. I am just beginning to run tests, but I have already found this laser will cut my 3mm basswood plywood in one pass. Engraving looks great. I can't speak to longevity as I just put it into service. I will update as I run more tests and discover its abilities but for now I am very happy with this laser head. If you are looking for a moderately priced 20 watt optical power laser head and don't mind a little DIY to get it mounted, this is the module for you. Final note - I bought the package that comes with a power supply and power switching board since I didn't trust the engraver power supply to be able to supply enough current for this module. Electrical connection was simple and the power switch board has a switch to select either the engraver power supply or the external power supply.