etching letters into glass?

i need to etc letters into plexiglass and cutting out the design would take waaaaay to long (it’s long). is there a type of glass etching cream or liquid i can use with a paintbrush to just freehand all the writing? i’ve read that regular glass etching creams would etch plexiglass too.
i could buy actual glass to so it there one that would work well with freehanding words onto actual glass?