I am just about to tile my bathroom, with plain white 15cm ceramic tiles, and a thin black border tile which has a curved surface. Can anyone tell me if I will need to buy a tile saw (i.e circular saw type) to cut the border tiles? I am assuming that as they are curved that I will need to cut mitre joins where they meet in the corners. Is there anyway I can cut these tiles ti size without buying an electri ctile saw?