Cooling question

I am curious about this too. On the other thread It was said that it could do one-print-at-a-time. But I am not quite sure what that means exactly? I certainly don’t intend on running a production line with this thing. Maybe a better question is - while cutting through 1/4" acrylic, how long can the machine run before it needs to cool off? I would be in my home at about 75 degrees (Arizona!)