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First measure the positions of all items
Try to fit all items as far as possible in line, as this gives the most regular appearance. Use the gaps between the tiles as a guide. Check first if you can drill the holes in the gaps between the tiles. This makes the holes easier to drill, you won’t damage the tiles and you’ll be sure that you fit the bathroom accessories in a straight line.
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Drilling in a tile
If you can’t avoid drilling in a tile, mark the position of the hole on two crossed strips of masking tape. This makes the place you have marked more easily visible on darker tiles, and will also help to prevent the drill from slipping away.
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Check everything one more time before you start drilling
For example: if you’re fitting a shelf in the bathroom, hold it against the wall in the desired position. Put a spirit level on the shelf, adjust the shelf to make it horizontal, and mark the position underneath the shelf. Then check that the second hole is horizontally aligned with the first.
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Drill slowly into the tile
Drill slowly without using the impact function. Once you’re through the tile you can switch the impact function on again. Make sure the hole is deep enough so the plug is fully recessed in the wall, behind the tile. This prevents the tile from cracking when you tighten the screw.