Meterk Laser Engraver Printer 1500mW Portable Household Art Craft DIY Mini Engraving Printing USB Wireless Bluetooth4.0 for iOS/Android/ Windows PC with Alloy Shell Frame

Don't buy. I did a destructive teardown and measured the laser diode. It draws a constant ~290mA at 3V (max current point from 2.5V~4.5V range), so it must have an internal constant current driver to regulate current. Assuming 2.4V (0.6V voltage drop for constant current driver) laser element voltage and 30% conversion efficiency, that translates to 210mW of optical power from the diode. The lens it comes with is an uncoated single piece lens, which has at most 90% efficiency, so that drops optical output power down to 190mW, only 1/8 of rated 1500mW power. Also the acrylic case is crap, both material quality and mechanical design. Tightening the screws with a little torque causes the acrylic to crack. The focus screw of the laser module is loose, backlash is very bad so that it can't be precisely adjusted. I had to line it with a piece of plastic film to make it usable.It does engrave wood, plastic and even plastic with glass fiber, but the speed is very slow, and you have to adjust focal point to exactly the smallest size in order for it to work on glass fiber enforced plastics (or plastics with fillers). It did say it engraves anodized aluminum, which I had no luck doing so.Also beware buyers, this machine will briefly turn on laser full blast for very short amount of time (tens of milliseconds) randomly, causing unintended burning. If you happen to have one and you manually adjust the focal point or load/unload materials to engrave, make sure your hand is not in the way of the laser beam, even if it's in idle mode.

This machine gave me a few fights but once I got it set up - I fell in love. It has a strong plastic cage around the tray and laser. It connects to the computer through a single USB for both power and data. The setup files came on a thumb drive that installed super fast but needed an update (see noted below). The phone app is easy to find with the QR scanner and is very simple to use. It was very easy to locate my file on the computer, drag it to the engraver app and get working. The final engraving area is approximately the size of a school picture. This little machine gave me a taste and I'll keep it to do smaller stuff like coasters but I can't wait to buy a bigger one. This is a great entry level machine for crafters!Ok so I've gotta admit- I had some trouble setting this up. I'd tried and tried and was ready to give up. So I'm gonna give you tips for the install so you can love it as much as I do. First, don't try to use the website that is on the thumb drive. The Chinese government shut it down. lol Second, if you get the error message that the app can't run on your windows machine, go to the trusfer website to download the updated driver. If you have Windows 10, use the second download link (the smaller file). The app will be in Chinese - but if you look in your instructions - there are labels for everything vital in the app.Third, it says to adjust the focal length but it doesn't say how. Put on the glasses and turn the silver collar around the laser, it will get larger or smaller each direction. Make it the smallest point possible. Finally, don't give up if you run it through and you don't really see anything. Just leave it exactly where it is and run it again and again. Happy engraving!

Wanted to wait a week before writing a review to let my initial glee settle out.This device has a certain novelty attached that comes with using something that is not often considered useful.As such, when I experienced the annoyance of the laser working for a couple seconds and dying on the second day, I was quickly dismayed.I persevered however and discovered that this unit has a charge rate limiter located between the power button and the charge/info port.The switch allows one to switch from 0.5 to 1 A charge rate.It came set to 0.5 and this was not demoted in the manual. . .After switching it over I have not encountered the issue again.I do not have an Android, but I tested the programs for Windows XP, 7 and 10 as well as the iPhone app.They all worked as expected.The Windows .exe was the fastest and best interface and worked the same way across all theee versions.The iPhone app can use some improvement, namely the ability to chose the burn style.It does take a couple minutes to transfer an image from the iPhone, but this was within expectations and noted several times.The 1.5 A Laser did do about Four solid burns per fully charged battery.I like the fact the amber LED by the Red Power LED flashed indicating power level.There is a slider in both the program and the app to allow one to change the burn speed.Faster on wood and cardboard, slower in leather.I did test the laser on metal with paint, ink and other coating applied.Unfortunately I could not get this laser to burn anything into metals. . .All in all, I’ve found this device best suited to burning tokens and trinkets out of wood.I recommend a sticky surface like the one they provide for loose words as the inherent vibrations will cause the wood token to wander.Also take care not to move the work plate.If you do, my recommendation is to power the unit down an reboot so that it re-zeros.With each surface, take time to focus the laser.I found that polarized sunglasses worked a little better than the provided eye shields.I do not recommend staring for longer periods however and their disclaimer stands as well, the emissions of this laser are NOT within American standards for exposure and you can get sunburned in your eyes for staring too intently at this device in action.Cheers!

I am very displeased with this product. I cannot get the software to load into either of my computers. I requested assistance on the product website as well as registering, and have received no response at all. I finally got it to respond to Bluetooth commands from my phone but only as far as text applications and preloaded graphics. I am not able to use graphics from my storage. Would not recommend this product at this time.

Used for burning designs on coastersNeed to be online to use images supplied by the program.