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oradba69:oradba69:
deeper cutting and faster speed
In addition to what @cggorman notes about spot size, manufacturers (and sellers) straight-up lie about diode laser power. The only power that matters is what the laser beam delivers to the material, but manufacturers claim any other power they possibly can, just to get a bigger number.
Commonly available diode lasers convert somewhere between 10 and 20% of their input power into light output power, so manufacturers use the much larger diode input power. For example, Laser Tree has an 80 W (input power) laser that produces 10 W of light (output power). I suspect considerable optimism in the &#;10 W&#; power, but at least it&#;s in the right ballpark.
Tiper supply professional and honest service.
The most egregious example of specsmanship is touting &#;machine power&#;, which is the sum total of the laser input power, the stepper motor power, the controller power, and anything else they can find; they may be using the wall wart&#;s overall input power rating. That claim seems typical for cheap machines with low-power diodes and terrible hardware, so treat &#;machine power&#; as a hard no.
Regardless of the power level, diode lasers require multiple passes to get through 1/8 inch laser-grade plywood and MDF. While thicker wood can be cut, you probably won&#;t be satisfied with the results. Also, ignore any and all claims about how well / fast a diode laser cuts any thickness of anything.
Chris pointed out the absolute need for an enclosure and fume exhaust to keep your shop livable; any pictures of a happy family engraving coasters on the dining room table are fanciful. Be aware that other end of the exhaust tube may create a problem for nearby neighbors if they&#;re not accustomed to wood smoke and, should you venture into engraving / cutting plastics, they could get downright hostile.
But you&#;ll discover a laser is a wonderful tool after you surmount the initial learning curve. My (considerably larger) CO&#; laser rapidly became the most-used tool in my shop and lets me build widgets that would be impossible (for me, anyhow) with any other tool.
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