I spent a full month putting the ComMarker B6 60W MOPA fiber laser through real small-shop testing, and in this video I walk you through what it actually does well (and where you need to pay attention). I cover the whole experience from setup and autofocus, to dialing in parameters, to running speed tests and checking repeatability. The big question I wanted to answer was simple: is this the kind of compact fiber laser that makes sense for a small business or side hustle that needs clean, consistent results without babying the machine? From there I get into the fun stuff: deep engraving solid brass, marking and color work on stainless steel using the MOPA capability, and then branching out into a bunch of common “shop materials” like plastics, leather, stone, and more. I also talk about software workflow and what you should expect day-to-day—because specs don’t matter if the machine is annoying to use. My main takeaway is that the B6 60W MOPA brings serious power and precision in a small footprint, and the MOPA flexibility is a big deal if you care about dialing in finishes and color on metal.