How can I re fininsh my corian counter tps. I heard sanding with 400 grit left marks should I start with a finer grit . Thanks

This is the link for Corian care:

AOL Search results for "Corian by Dupont"

I have always been told that sanding Corian is a no no. If your counter is damaged to the extent that you feel you need to use a sander, I would suggest calling 1-800-4CORIAN to find out if that is possible and what you should use. They may have other suggestions.