I have a whiteboard in my classroom (regular height - but only about 2 feet wide) that has a rather big scratch across it. It is functional but the scratch bothers me (marker dust gets caught in it and it is very noticeable). A few months ago I found a product online that you could resurface a whiteboard with (not whiteboard paint that you would use on a new surface, but a product meant to fix real whiteboards). I just spent about an hour trying to google and find it again and I can't for the life of me find any such product. Has anyone used any sort of liquid product to resurface their whiteboard?