One of the kids threw something at the sink and a piece of it broke off. The piece is about half the size of my hand. I thought I'd superglue it back on, but theres a little gap around the whole piece. Can i just just superglue the piece back on, and then use all purpose filler, to cover up the cracks. I think this would be messy and ugly - is there something I could get to finish it off properly, and make it look nicer. Thank you all for your kind help.