How is the best way to cut a ceramic tile is a 'U' shape?

I want to cut a ceramic tile to fit round an electric socket. I have found the tiles where have to cut an 'L' shape easy, using my electric tile cutter, but with a 'U' shape I will need to make a cut in the centre of the tile. How is the best way to do this? I also have a tile scorer/snapper and a... show more I want to cut a ceramic tile to fit round an electric socket. I have found the tiles where have to cut an 'L' shape easy, using my electric tile cutter, but with a 'U' shape I will need to make a cut in the centre of the tile. How is the best way to do this? I also have a tile scorer/snapper and a small hand saw for tiles. Thanks
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