0BurfBest Answer 8 years ago ReplyUpvoteDo you mean Corian? If so, try denatured alcohol and if that doesn't do the job, acetone. But, test whatever you use on a hidden section to make sure it won't damage the tabletop material. This may sound counter-intuitive but I have had good luck with a dry erase (Whiteboard) marker on smooth, non-porous surfaces. Completely cover the mark with the dry erase marker, let it completely dry and then wipe off. If there is any stain leftover, the denatured alcohol should remove that. As before, you want to test it first, just to make sure.