That?s where it is hard. You hit the nail on the head when you said ?cut cleanly?. Our 22 watt machine will cut to about 19mm but not cleanly. Winter growth timber or knots etc will impact the consistency of the cut. I can normally cut to about 12mm without issue but the cut is dark. This is not a problem with the beekeeping stuff that we are making but in a commercial situation it may be considered unacceptable. The other issue that arises with deep cutting is that the kerf of the cut increases with depth due to charring and the beam losing focus. This requires a bit of tweaking of measurements to compensate. That being said, once the file is created and is working, all is good. I have been looking at options for upgrading but have decided to stay with what I have for the moment. When things like my isolation cages etc are made, it is a bit awkward with the small bed to laser pieces larger than the cut area of the machine but it is still doable. To be able to cut frame to bars in one go would also be nice but it is not essential. I have to remind myself that this is only a hobby machine and not something that I plan to make money from. Being retired, I have the extra time to make do with and modify techniques to get the best out of the laser I have purchased.