I have recently just tiled this travertine wetroom, all is good and the customer is well chuffed. The little problem i have is where the sink sits the peice of trav its sat on is just slightly overhanging the tile underneath it by about 1/2mm. My question is, whats the best way to rub the tile down so there's no lip/overhang? I dont want to use a grinder really to keep dust down, i'm i right to use wet and dry paper? what grade, in what order? how long do you think it will take, cheers.