Erbauer Diamond Tile Drill Bit 18mm
Drilled 4 holes in ceramic tile - no sign of wear or bluntness and looked as good as new afterwards. But needs a fast drill speed - so use a mains drill or fully-charged battery - and PATIENCE. Let the bit do the work and be prepared for it to take 5 or 10 minutes. Worth dipping in water every so often and then drying it off - keeps the heat down and removes the dust. Also to keep it on the mark recommend using a piece of wood with a 18mm or 20mm hole drilled in it (as recommended in relation to another bit)
2 Aug 2015
It worked well!
I had 4 holes to drill for pipes in new bathroom. Having read the one review it did not seem promising. It drilled the holes perfectly in grade 4 porcelain tiles and looks as if it will do many more. It does say dry drill bit but I used a water spray to keep it cool. Good price.
1 Jan 2015
Marcrist it ain't
I bought this bit to drill 4 holes in my bathroom. It managed to get through 1 before it became so dull it just kept cracking tiles.
The polar opposite to the 6mm Marcrist bit I also bought which has sailed through 8 holes and counting.
It's going back tomorrow.
25 May 2014