by wildbill »
Mon Nov 16, 2009 1:53 pm
i am desperatly trying to make a 25mm hole in a very solid porcellin tile and having little luck i brought a circular hole cutter dimond tipped kept it constantly wet and it took over a hour to drill one hole and the bit had had it , i then tried using the spear head cutter bits in 5mm and 8 mm and they mad tiny holes and just got so hot so quick they ended up getting blunt instantly , ive tried the drill on fast speed slow speed even hammer and no change , please help running out of ideas , cheers
