Answer:
These are the disadvantages of acrylic plastic
Well, firstly it is very cheap, so it wouldn't be very good in the first place.
It cracks easily.
It scratches easily.(Don't use sandpaper on it, because it will look like a very old window-scratched-!)
It breaks, snaps, and shatters easily.
I hope knowing this will help you with homework/classwork, or coursework.