People love to tell you that “it’s not 40 watt” because it’s not. That’s the input power not the output power. There is no 80 watt diode, only 80 watt CO2 lasers. You can upgrade the diode, but as mentioned, you need to upgrade just about everything except the gantry. It’s almost not worth it to be honest. Just learn with the Ortur then upgrade to a CO2 laser.
Jtech has upgrades including a 7 watt output diode but it’s very expensive.