you should ask... Just in the midst of restoring a 80s vintage AeroMeter compass
with an acrylic bubble that was so degraded you couldn't see the color of the card. This Kit
is used to restore acrylic aircraft windscreens. But being a cheapskate, I went with what I had onboard. 1000, 1500, 3000 grit wet dry sandpaper, and a final polish with toothpaste. All of the kits contain some sort of a liquid to apply as a last step. This is due to the fact that even the finest polishing compound leaves some scratches and a hazy finish. The liquid fills those voids and leaves a glass smooth surface. Usually some form of urethane/acrylic clear coat.
Best I have found is this
. Automotive 2 part acrylic clear coat. Puts another layer between the world and your plastic. Downside is you have to use the entire can within 48 hours, but a coat on your good hatches and other plastic parts
will use the excess. Not cheap
, but harder than the hinges of hell.