The simplex font needs a little work lol, Otherwise it’s good.
I didn’t think the Simplex font was really intended to be go to for cut out letters. Turn the amps way down and you can “engrave” lettering that is readable. I’ve used it with a pen and inked out a sign on poster board. Sure beats my messy printing!
Definitely would be good for a pen, also extremely useful for cut out signs and simple lettering, don’t always need or want big block letters.

