If you have a deep scratch on your plexiglass, then start with 600-grit sandpaper instead.
Your piece of plexiglass may start to look cloudy or frosted over, but it will not stay that way when you finish.
Alternating between wet and dry sandpaper creates more abrasion and helps work through the scratches faster.
You can buy plexiglass polish from your local hardware store. Plexiglass polish may also be called acrylic polish in stores.
Don’t use a cloth that has an abrasive side since it will only add more scratches to your plexiglass. [8] X Expert Source Claudia & Angelo ZimmermannHouse Cleaning Professionals Expert Interview. 12 July 2019.
You can buy scratch remover in hardware and big box stores. You may also apply the scratch remover directly on the plexiglass if you want.
Hold your plexiglass up to a light to see if there are any visible scratches. If there still is, then buff on another coat of scratch remover.
You can buy heat guns from your local hardware store. Many heat guns will automatically start on the lowest heat setting when they’re turned on.
Make sure the plexiglass is sitting on a heat-safe surface since the heat gun will make it very warm.
Using a heat gun does not work on deep scratches.
