Installing a grab bar in the tub or shower is a great idea, but trying to drill through a ceramic tile surround can be a challenge. The slick, glazed surface makes the masonry drill bit walk all over the tile.
I’ve heard some suggestions about using a nail to tap a slight indentation in the tile for a starting point, but this may end up cracking your tile.
Instead, try this: Place an “X” made from masking tape on the spot you want to drill. Use a pencil to mark the location on the top of the tape. The paper surface of the tape will keep your drill bit in place, allowing you to drill the hole where you need it.
Once drilled, simply remove the tape, and you’re ready to install your grab bar.