Use a special carbide tipped drill bit to cut holes in tile. Apply masking tape or another appropriate covering material to protect against chipping and to keep the drill bit from slipping. Mark the spot and nick it slightly with a punch. Apply medium pressure to the drill to prevent chipping or breaking.
DADOS FORNECIDOS PELA ESCO (COMISSÃO EUROPEIA) E O*NET (DEPARTAMENTO DO TRABALHO DOS EUA)