it performs very well have no problem cutting or engraving with anything. I’ve tried so far excellent product.

I've been using the 20 watt most of the year. Does a great job and learned a lot of it's capabilities. With that being said, I've started experimenting even more and have been able to sell a few things. That's where the 40 watt comes in to play. Instead of waiting a certain amount of time for your project to complete to determine if you like the results, the 40 watt gets it done in basically in half the time. So really you complete your prototype faster so you can move on to production that much sooner. So not only is it a time saver, but you also get the added benefit of being able to work with thicker materials and in some situations get better results. If I new then what I know now based on my circumstances I would have bought the 40 watt from the beginning.

I have been very impressed with the 40 watt laser module. I had the 20 watt and was limited on speed and cutting ability. The 4” watt has made a big difference too me on ever day engraving and cutting . Wish I bought this to start with!

upgraded from my 10w what a difference. Great powerful laser, makes big job easy to handle. highly recommend

Im reccomending this machine to everyone, I have had great success with it, and eventually plan on moving up to the P3