Now you've got me thinking I need to add one of these instead of buy a standalone unit. Which in my case may not have a large enough area without spending a ton of money.
I have two thoughts, which gets me into trouble sometimes. First, set the optimum focal point and set my z clearance height as far as I can go to eliminate burning when it moves. I'll probably have to increase my z speed.
Second, add a relay to my controller to shut the laser off when it has to retract to safe height and back on when it reaches cutting height.
Maybe both, I dunno, my gears are starting to grind now.