I am running f, go and speak with George at Endurance , he is a great guy , genuine and trustworthy, i have cut 8mm ply in about 4 passes once i got the focus right, i avoided the co2 lasers as most were cheap chinese with crap electrics and only last about 750/1000 hours on the tube. you can buy the laser and board if you have all the steppers and framework, you dont have to buy a complete laser, go chat with him on whatsapp is the best way on his website and tell him i told you to call as he knows me well. I have had no problems with my laser or talking with george re setting it up, they prefer to use inkscape and their own plugins and dont support LB i think. It’s just the way they went. I am very happy with mine and the fact it runs on my mac i am over the moon as i hate windows and always have. (sorry windows users) I was brought up in a mac environment 35 years ago! I never thought ever i would get the laser working properly until i tried this software, i much prefer it to inkscape, he guarantees his lasers for 10,000 hours and continuously running for 48 hours, he now has 10 watt lasers and 20 watt setups as well, hes based in Russia and Florida.