Does a laser cutter need to have an e-stop? It’s not like a heavy duty CNC machine where you could trap a limb and it is totally enclosed while running.
@dan has just said it is in the hopper: Print button to pause a print? -- It’s in the hopper, so it doesn’t seem like it is a safety requirement for approvals. A bit surprising as you want to be able to stop as fast as possible if there is a fire and don’t necessarily want to open the lid or reach over it to kill the mains. You want to turn off the laser and move the the head away from the flames ASAP and possibly keep the extraction going. Does extraction tend to fan the flames or extinguish them?