The most powerful laser I'd ever tested, as of summer 2025: the LaserTree K60, a module with a button that switches between 20, 40 and 60 W. It was so strong I had to move my whole setup outside. And yes, I used it to engrave my daughter's snowboard.
A 3 kg aluminium beast
The K60 is a module, not a full machine. You mount it on your existing frame (LaserTree also sells frames), and I put it on my Mecpow. It weighs more than 3 kg, has a full aluminium body, a magnetic door with a small protective window, built-in air assist and a standard mount that made installation easy. My Mecpow air pump connected straight to it. The power button changes what 100% means in LightBurn: at 20 W, 100% is 20 W, and so on. My only complaint is the slide-down focusing system. With this much weight going up and down, it needs care, and I'd like to see a better design in the future.
Gentle at 20 W
I was expecting a brute, but at 20 W and low power it engraved thin 2 mm plywood strips precisely. I also made a "do not disturb" sign for my wife, and my logo on various offcuts came out better than I expected. It's not just a beast. It can be gentle too.
Brutal at 60 W
At 60 W I cut a 1.7 cm parquet tile at 100% power and speed 100. It burned a bit and even caught fire. Faster with more passes would have been cleaner. Sometimes I saw flames even with air assist on, but it handled it. The thickest piece was over 3 cm of hard pine, cut in five passes at 100% power and speed 500. For plywood my notes were: 1 cm at speed 600, 1.5 cm at 200 mm/min and 2 cm at 170 mm/min, all at full power. I didn't test metal because I didn't have any to hand.
Martina's snowboard
I buy my kids' small snowboards second-hand on Vinted, as they keep outgrowing them. I engraved my daughter Martina's name on her Burton at 40 W, 20% power and speed 2,000. It took off the top layer perfectly, but it went a millimetre or two deeper than I wanted, so test first! I'll probably coat it with resin to keep the water out.