Hello; Many years ago a common tool was a long plastic thing with a place on the end where a double edged razor blade was mounted. I used these for a few decades. With care they did a good job on glass. Never have had acrylic but I don't think they will work.
The device put the angle of the blade shallow enough to work well. The blades had to be taken care of as a flawed edge will put fine scratches in the glass, but I rarely got a scratch fro m them. It was the corners that tended to get tweaked.
I am not even sure the double edge blades are around. At least they are no longer common and I have not seen one of the holders in a long while.