Hey Bitbang hivemind! I have (somewhat questionably) purchased an old Blue&White G3 case for a future project. It's in rough shape though.

Are there any resources people can point me towards on how best to deal with that late 90s translucent plastic? I'd like to remove scuffs without scratching further, replace brittle parts that have disintegrated, and repair cracks if possible. I feel like the knowledge I have won't work when it comes to translucent plastics.