According to Toller :

If I am not going to cut with it again immediately, is it best to let it run
afterwards anyhow?

After hard slogging, even a few seconds of freerun will make a huge difference in
"bake time" - having given the blower chance to move cold air without the coils
producing any heat. Whether that decreases safety otherwise, is something
only you can answer.
--
Chris Lewis, Una confibula non set est
It's not just anyone who gets a Starship Cruiser class named after them.