"PipeDown" writes:

I found that, it still has nothing about repair. It is strictly care and
maintenence. This is the page that says not to put hot pots on the counter I
referred to.

Right near the end it discussed sanding pads.

In my opinion, you're wasting your time.
Contact Corian. They'll fix the counter.

I don't know how old yours is, but mine exploded (cracked) a couple of years
after I got it. (Microwave heated the counter.) Corian fixed it no
questions asked. Total cost ZERO.